What Is Electricity

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Unit6electricity

Unit 3 ElectricityName：Period 1新课讲授一．words精讲1.electricity, n.电力；电流，静电；高涨的情绪；紧张如：At night these streets are brilliant with a pearly radiance of electricity.While I was cooking supper, the electricity went off..链接：electrical电的, 有关电的；electric电的, 导电的, 电动的；electron电子2.foolish，adj.愚蠢的；鲁莽的；荒谬的，可笑的如：He was angry with himself for having made such a foolish mistake.We were all amused at his foolish behaviour.链接：fool (n.) 傻瓜 + ish → foolish (adj.) 愚蠢的What a fool I was to believe he is a good man!A fool always finds a greater fool than himself.3.bulb，n. 电灯泡如：The light bulb in the kitchen burnt out.I will have to change the bulb by myself.4.test, v.回转，返回； n.归来，返乡。

如：After I made a model plane, I tested it.The new drug will be tested first on animals.5.wire, n. 金属丝;金属线；vi.拍电报如：Electricity is carried along wires.Will you connect this wire to the television?Each of the homes has a security system and is wired for cable television.链接：by wire用电报，通过电报；wire-to-wire (北美，非正式)从起点到终点；自始至终6.bettery, n.[电]电池，蓄电池；[军]炮台，炮位；如：He is charging a storage battery.He was an okay battery commander.7.reply,n.答复、报复（行动）； vi.[法律]（原告对被告）答辩、作答；vt.回应，作出反应如：His evasive reply prompted me to ask another question.To their surprise, hundreds replied to the advertisement.8.tidy，adj.整洁的、数量大的； n.盛零碎物品的容器、椅子的背罩；vt.& vi.使整洁；弄整齐如：It was a neatly furnished and immaculately tidy room.A tidy amount of money is a large amount.She made her bed, and tidied her room.链接：tidiness，n. 整洁 I'm very impressed by your tidiness and order.9.identify, vt.识别、认出，确定，使参与，把…看成一样；vi.确定；认同如：Could you identify your sunshade among a hundred others.The reporters identified one of the six Americans as an Army Specialist.Reading this book, we can identify with the main character's struggle.链接：dentical adj 同样的；identification n. 辨认, 鉴定, 证明; identify v. 识别, 鉴别,确定10.conversaon, n.交谈、会话, 交往、交际；会谈、（人与计算机的）人机对话如：Please pull up a chair and join the conversation.If you have a conversation with someone, you talk with them, usually in an informal situation.11.anyone, pron. 任何人；任何一个；谁如：That dog will pick a quarrel with anyone he meets.Don't repeat what I've told you to anyone, it's private.链接：anyone's game平局It was still anyone's game at half-time.中场休息时还是平局。

unit6 Electricity all around

Page 74
in a way
power station connected to
wires anyone
D1 Find these sentences in the story on P73. Write the name of the person or thing that pronounce in italics refer to. 1.I’ m going to buy some sweets. (Lines 1-2) Daisy
It flows through wires. It’s like water, in a way. flow-flew-flown 流动；循环
光阴流逝。 Time flows. 血液在我们体内循环。 Blood flows through our bodies.
age Points
It’s like water, in a way. like v. & prep.
He

was too scared to tell anybody.
我问他去哪儿，可是他不回答。
I
asked him where to go, but he didn‘t reply.
她是个愚蠢的老太太! She is a foolish old woman!
fuse
wire 保险丝
in surprise 惊奇地
She’ll look foolish. foolish=stupid=silly愚蠢的反：wise=smart=clever聪明的 look sound smell 感官动词+形容词 taste feel
I looked at the girl in the photo_______. She looked ________. A.careful; beautiful B.carefully; beautifully C. carefully; beautiful

Electricity ppt.

power to do things. (energy)
VI. Discussion.
The danger of using electricity carelessly at home. It can damage our electrical appliances first, Secondly, it also can cause fires.
We must take use of it properly ,or it can cause the serious result. VII. Homework Write a short passage about saving electricity.
Thank you!
IV. A. Phrases
serve v.服务 servant n. 仆人 ________ electric electrical electricity n. 电_________adj. __________adj. explain v. explanation n. 解释、说明 ________ trick s b.捉弄某人 look like V. 看起来像
Do you often watch TV and use computer at home?
What makes them work, fire, water or electricity?
Electricity.
Can you give some examples about the electrical appliances?
a CD player a cooker an air conditioner
electrical appliances

以电为主题的英语作文初二

以电为主题的英语作文初二Electricity is a topic that affects us all, from powering our homes and devices to shaping our industries and economies. Let's explore some questions related to electricity.1. What is electricity?Electricity is a form of energy that results from the flow of charged particles, such as electrons, through a conductor.电是一种能量形式，它是由带电粒子（如电子）通过导体流动而产生的。

2. How is electricity generated?Electricity can be generated from a variety of sources, including fossil fuels, nuclear power, hydropower, wind power, and solar power. These sources are used to turn turbines, which generate electricity.电可以从多种来源产生，包括化石燃料、核能、水力、风能和太阳能。

这些来源被用来转动涡轮机，产生电能。

3. What are some common uses of electricity?Electricity is used for a wide range of purposes, including lighting, heating and cooling, powering electronics and appliances, and running machinery in industries such as manufacturing, transportation, and healthcare.电被用于各种各样的目的，包括照明、加热和制冷、为电子设备和家电供电以及在制造、交通和医疗保健等行业中驱动机械。

电学英语知识点总结初中

电学英语知识点总结初中1. What is Electricity?Electricity is the flow of electric charge through a conductor. It is caused by the movement of electrons, which are negatively charged particles, through a material such as a wire. This movement of electrons can be harnessed to create electric currents, which can be used to power devices and perform work.2. Current, Voltage, and ResistanceCurrent, voltage, and resistance are the three fundamental properties of electric circuits. Current is the rate at which electric charge flows through a conductor, measured in amperes (A). Voltage is the difference in electric potential between two points in a circuit, measured in volts (V). Resistance is the opposition to the flow of electric current, measured in ohms (Ω). These t hree properties are related by Ohm's law, which states that the current flowing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance.3. Electric CircuitsAn electric circuit is a closed loop through which electric current can flow. It consists of a source of electrical energy (such as a battery or generator), a load (such as a light bulb or motor), and conductors connecting the two. There are two basic types of electric circuits: series circuits, in which the components are connected in a single path, and parallel circuits, in which the components are connected in multiple paths. Understanding how electric circuits work is essential for designing and troubleshooting electrical systems.4. Electric PowerElectric power is the rate at which electric energy is transferred by an electric circuit. It is measured in watts (W) and is calculated using the formula P = VI, where P is power, V is voltage, and I is current. Power is an important concept in electrical engineering, as it determines the performance of electrical devices and the cost of electricity consumption.5. Magnetism and ElectromagnetismMagnetism is the force exerted by magnets, which can attract or repel other magnetic materials. It is caused by the alignment of the magnetic dipoles in a material and plays a crucial role in the operation of electric motors, generators, and other electrical devices. Electromagnetism is the interaction of electric currents with magnetic fields and is the basis for the operation of transformers, inductors, and other electrical components.6. Capacitance and InductanceCapacitance is the ability of a component to store electric charge, while inductance is the ability to store magnetic energy. These properties are essential in the design of electroniccircuits and devices, as they determine how electric fields and magnetic fields interact with components. Understanding capacitance and inductance is crucial for designing efficient and reliable electrical systems.7. Electrical SafetyElectrical safety is a critical consideration when working with electricity. It is important to follow proper procedures and use the right equipment to prevent electrical hazards and accidents. This includes wearing protective gear, properly insulating and grounding electrical circuits, and following safety standards and regulations.In conclusion, electricity is a fascinating and essential field of study with a wide range of practical applications. Understanding the key concepts in electrical theory and their practical applications is crucial for anyone working in the field of electrical engineering or technology. By applying this knowledge, we can design and maintain efficient and reliable electrical systems that power the modern world.。

electricityPPT课件

2. 告诉人们必须或禁止做某事用must或mustn’t You must hand in your homework at once. You mustn’t talk loudly in public.
3. 表示请求或允许做某事may 或can May I come in ? Can I open the door ?
4、must have done 也表示肯定的猜测，意为“ 一定做过……”
They must have cleaned the room . It’s so clean .他们一定打扫过房间了，它这么干净。
Ⅰ.用适当的情态动词填空：。
1.___C__an_____you swim? 2.We ___c_o_u_ld_n_’_t __operate the machine last week, but we can operate it now. 3.Don’t worry. You _m_a_y__ return me this book tomorrow. 4.He said if he ___c_o_ul_d___ask me another question. 5.My grandma is ill. Youc_a_n_’t__ talk so loudly here . 6.I can’t play with you. I __m_u_s_t_____finish my homework first. 7.I____m_u_s_t___ get up early tomorrow.
4. look like =be like 1. He looks like his father .= He is like his father . 2. ---- What’s he like ?=What does he look like?

宾语从句 8B2012年3月7日

If the question word is the subject of an object clause, we don’t have to change the Wh- question into a statement.
1. I wonder who usually does the shopping in your family. 2. Do you know what is in the bag? 五. 特别关注难点： We do not change the sentence orders as follows: 1. Can you tell me what’s the matter with Tom? 2. I want to know what’s the problem with my watch.
基础练习题三： 1. “ Will our future life be terrible without Internet? " The girl asked her father. (合并一句） / whether The girl asked her father if _________our future life would ________ be terrible without Internet. 2. The boy asked his mother , “ Does water freeze at 0 oC ? ” (保持原句意思) 2003A if freezes at 0 oC. The boy asked his mother_____ water ________ 3. Jack’s mother asked him, “ Have you packed your things?” (保持原句意思) 2004A if had packed his things. Jack’s mother asked him____ he ______ 4. Will Bob join the swimming club? Please tell me. （合并句子） 2007 if Bob __________ will Please tell me _____ join the swimming. 5. Are there any new markets in Asia ? The sales manager wants to know . ( 合并为一句) 2011年 are if The sales manager wants to know ______ there ______ any new markets in Asia.

中考英语二轮复习句型转换专题训练

句型转换专题训练43.My friend often has sports at weekends, doesn't he?44.I used to walk after supper.45.I have had the pen for a year.46.What nationality is he?47.Where are you going?48.He is busy, but he always helps me.49.How long has she lived in Shanghai?50.We don't have to stay there for 5 hours.51.Have you finished your homework yet?52.None of them were men / was a man.53.He can either stay at home or see a film.54.Neither Mary nor I have read the book.55.Which shirt do you prefer?56.How many people live in Hong Kong?57.What kind of flat would you like?58.How much did the beautiful watch cost you?59.How many times a week does Peter go to see his grandfather?60.How often does Peter go to see his grandfather?61.What is your favourite hobby?62.They have been in England for about 30 years.63.What's your ambition?64.How many brothers has your friend got?65.He hopes I will write to him soon, doesn't he?66.She seldom goes to bed before 12, does she?67.I don't usually need much sleep.93.Could you tell me where the post office is?94.Their leaves are made to taste nasty by a chemical.95.What is the most important way to fight pollution?96.Trees not only cool the air but also clean it.97.What's in the left hand corner of the room?98.She doesn't even know what electricity is.99.Electricity is a good servant as well as a dangerous one. 100.Nobody's ever seen electricity, has he?101.The thick wires are called cables.102.Water was given a thorough cleaning.103.They didn't hold a meeting.104.It's really unfair to them, isn't it?105.Ought we to discuss it?106.Mr. Li is a very rich man who lives alone.107.He spent 2 million yuan on the vase.108.Both of them denied stealing the vase.109.The earring belonged to her.110.She said someone had stolen it from her house.111.I did my homework instead of watching TV.112.You hardly ever saw computers, did you?113.The program is written by a human being.114.A computer has to be given different programs,115.It's too big for them to take.116.I haven't got rid of the rats yet.117.She has been in the League for a year.。

静电接地

工艺控制
• 在输送工艺过程中，在管道的末端加装一个直径较大的松弛容器，可大大降低液体在管道内流动时积累的静电。 • • 为了防止静电放电，在液体灌装、循环或搅拌过程中不得进行取样、检测或测温操作。进行上述操作前，应使液体静置一定的时间，使静电得到足够的消散或松弛。 • • 料斗或其他容器内不得有不接地的孤立导体。同液态一样，取样工作应在装料停止后进行。
怎样控制静电？ How Do We Control Static Electricity?
• • • • 接地Grounding 跳线Bonding 潮湿Humidification 限制液体流速Limit Flow Velocity of Liquids • 调整公式We Adjust Formulas 防静电塑料Anti-Static Plastic 接地软管Grounded Hoses ESD鞋ESD Shoes 封闭式过滤No Open Filtration 检查接地Inspection of Grounds 惰化Inerting
静电的危害 Static Electricity Hazards
• 静电可发生在运动的人员、机器、液体或固体上，通静电一产生便导入地下,人们感觉不到。只有静电积聚或放电时才能被察觉。
静电的危害 Static Electricity Hazards
. 静电的电位一般是较高的。例如人在穿、脱衣服时，有时可产生
静电对人体的危险
• 冬天空气过于干燥，人体皮肤和服装之间还容易产生静电，高者瞬间静电压可达上万伏，造成人体不适。有人对日常生活产生的静电做过调查和实测，在地毯上走动可产生1500～35000伏静电，在乙烯树酯地板上走动时可产生250～12000伏静电，室内屁股在椅子上一蹭就会产生1800伏以上的静电。静电的高低主要取决于周围空气的湿度。通常静电干扰超过 7000伏，人就会有电击感。相关资料表明，静电对人体有非常大的危害。持久的静电可使血液中的碱性升高，血清中钙含量减少，尿中钙排泄量增加，这对于正在生长发育的儿童，血钙水平甚低的老年人，以及需钙量甚多的孕妇和乳母无疑是雪上加霜。过多的静电在人体内堆积，还会引起脑神经细胞膜电流传导异常，影响中枢神经，从而导致血液酸碱度和机体氧特性的改变，影响机体的生理平衡，使人出现头晕、头痛、烦躁、失眠、食欲不振、精神恍惚等症状。静电也会干扰人体血液循环、免疫和神经系统，影响各脏器（特别是心脏）的正常工作，有可能引起心率异常和心脏早搏。在冬季，约三分之一心血管疾病的发生与静电有关。在易燃易爆地区，人体带有静电还会引起火灾。

沪教牛津版七年级英语Unit 6 单元测试卷含答案)

七年级(下)Units 6综合能力测试题听力部分(20分）i.听句子，根据所听内容选择最佳应答句。

句子念两遍。

（共5小题，每小题1分）1. A. No, you mustn’t. B.Yes, you must. C.Yes, you need.2. A. She likes English. B.She is beautiful. C.She is 23.3. A. No problem. B. Not very well. C. What about you?4. A. He likes playing basketball. B.He is good at swimming. C.He is tall and thin.5. A. She is from America. B.Mrs Wang. C.She is strict.II.听对话，根据对话内容选择最佳答案。

对话念两遍。

（共6小题，每小题1分）听第一段对话，回答第6〜7小题。

6. What does the man think of electricity?A.It’s easy to produce.B.It’s important.C.It’s difficult to produce.7. What will they probably do?A.Turn on the TV.B.Turn off the TV.C.Turn off the washing machine.听第二段对话，回答第8〜9小题。

8. What is Sam doing now?A.Reading a newspaper.B.Reading a book.C.Listening to music.9. Which of the following is NOT Sam s advice?A.Turn off the light when we don’t use it,B.Turn off the TV when we don’t use it.C.Turn off the computer when we don’t use it.听第三段对诖，回答第10〜11小题。

E07T24

L24: Chapter 5 课文重难点( 一)----Electricity1. 看看火鸡和笨蛋的关系大家大概都知道，turkey就是火鸡，美国人在感恩节和圣诞节时家家户户都要吃火鸡。

可是，活的火鸡非常难看，行动迟钝，而且笨头笨脑的。

所以，要是你把一个人形容为turkey，那你就等于说，那个人是个愚蠢无用的笨人。

例如：I'm worried about this young fellow（家伙）mydaughter is dating（约会. He never finished school, he doesn'thave a job, he dresses like a bum（游民）--he looks like a real turkey to me.2. 世界上最强的中国式英文We two who and who？咱俩谁跟谁阿?1．How are you? How old are you?怎么是你，怎么老是你？2．You don't bird me, I don't bird you你不鸟我，我也不鸟你4．You have seed I will give you some color to see see,brothers ! together up ！你有种，我要给你点颜色瞧瞧，兄弟们，一起上！5．You me you me 彼此彼此6．You give me stop!! 你给我站住！7．Watch sister 表妹8.．American Chinese not enough 美中不足9.．小明：I am sorry! 老外：I am sorry too!小明：I am sorry three! 老外：What are you sorry for?小明：I am sorry five!10．If you want money, I have no; if you want life, I have one!要钱没有，要命一条。

科技翻译练习

What Is Electricity?The last two chapters have described some of the ways in which electricity behaves, without saying what it is. 以上两章讲述了电的一些活动特性 , 但并没有说明电究竟是什么。

To most people electricity is a rather mysterious thing, perhaps because it is a silent and invisible ---- almost a secret -- agent which we do not know in the direct way we know things that we can see and touch. 对大多数人来说电是一种很神秘的东西 , 这大概由于它是一种无声、无形 , 几乎是神出鬼没的物质 , 我们无法想象了解那些看得见、摸得着的东西那样 , 去直接地了解它。

But everyone of the many thousands of different materials in the world contains hidden electricity. 但在世间成千上万种不同的物质中又无一不包含着潜在的电。

All materials are made fromdifferent simple substances called "elements".一切物质都是由一些各不相同被称为 " 元素 " 的简单物质构成的。

Some materials, for instance, copper, iron, carbon, and oxygen and hydrogen gases, contain only one kind of element. 有些物质, 如铜、铁、碳以及氧气和氢气只含有一种元素。

Unit 3 Electricity

Unit 3 Electricity词汇1.servant解析：n. 仆人例句：Fire and water may be good servants, but bad masters.A politician should be a servant of the people.2. electricity解析：n. 电;电能例句：While I was cooking supper, the electricity went off.Without electricity, life can be very difficult for many people.3. trick解析：v. 哄骗n. 诡计;花招例句：Don‟t try to trick me!Her partner tried to trick her out of her share.On April Fool‟s Day, we play tricks on each other.I was told that I failed in the maths exam and now I know it was only a trick on me.4. foolish解析：adj. 愚蠢的例句：He was angry with himself for having made such a foolish mistake.We were all amused at his foolish behaviour.Tips：fool (n.) 傻瓜+ ish→foolish (adj.) 愚蠢的例句：What a fool I was to believe he is a good man!A fool always finds a greater fool than himself.The fool always does something foolish.5. wire解析：n. 金属丝;金属线例句：Electricity is carried along wires.Will you connect this wire to the television?6. meter解析：n. 计量器;计量表例句：The water meter has broken, and I had to buy a new one.The gas meter is in the cupboard.7. measure解析：v. 测量;度量例句：You must measure accurately.People can use sonar to measure the depth of the ocean.8. bill解析：n. 帐单例句：His hotel bill comes to 20 pounds.How would you like to have your bill, a bill for all or a bill for each?9. monthly解析：adv. 每月一次例句：The meeting will be held monthly.When he retires, he gets his pension monthly.Tips：month (n.) 月;月份+ ly→monthly (adj.) 每月的; monthly (adv.) 每月一次例句：I shall go there next month.The rent on his apartment was his biggest monthly expense.He attends a meeting monthly.10. in a way解析：在某种程度上例句：What you say is right in a way.In a way, I‟m glad you made that mistake, for it will be a warning to you.11. explanation解析：n. 解释;说明例句：You will find the explanation in the encyclopedia.I think that your explanation is reasonable.Tips：explain (v.) 解释;说明→explanation (n.) 解释;说明例句：The lawyer explained the new law to us.Can you explain why you were late for school?12. careful解析：adj. 小心的;谨慎的例句：Be careful not to fall.We should be careful when crossing the busy street.13. (be) careful with解析：小心对待;谨慎处理例句：These glasses are very expensive, so he is very careful with them.Be careful with those fireworks. They may cause fire.14. scratch解析：v. 挠;搔例句：The dog is always scratching.He was confused and scratched his head.15. invisible解析：adj. 看不见的,隐形的例句：Some stars are invisible to the naked eye.Some animals in nature can change their colour according to their surroundings, so they can be invisible to their enemies.Tips：in + visible 可见的;看得见的→invisible例句：The sea is visible from my hotel room window.Although air is invisible, it is very important to us.16. bulb解析：n. 电灯泡例句：The light bulb in the kitchen burnt out.I will have to change the bulb by myself.17. connect to解析：（使）连接；联结例句：Connect the hose to the tap and turn on the tap.Please connect me to the number in the USA.18. bury解析：v. 埋藏例句：Both his grandparents were buried here.Whenever he is free, he will bury his nose in a book.19. power station解析：n. 发电厂;发电站例句：He took us to see the power station they built.The new power station has already come into operation.20. politely解析：adv. 有礼貌的;客气的例句：They try to deal politely with angry customers.He stood up politely when the lady entered the room.21. grin解析：n. 露齿而笑例句：I knew she was joking because she had a big grin on her face.He said with a grin, …You know they are playing a trick on you.‟22. contain解析：v. 包含;含有;容纳例句：This book contains all the information you need.This kind of fruit contains a number of vitamins.Tips：contain (v.) + er→container (n.) 容器例句：--How much food can I put into the container?--It can contain almost all the food in this cupboard.23. clear解析：adj. 明白清楚的例句：He gave us a very clear explanation.Do I make myself clear?24. iron解析：n. 熨斗例句：Don‟t touch the iron! It‟s hot.The iron hissed as it pressed the wet cloth.25. switch解析：v. 开或关(电器)例句：Do you mind if I switch the radio off?I switched the light on as soon as I entered the room.26. off解析：adv. 不连接;不工作例句：The radio is off. So where does the music come from.I want to take a day off and give my house a thorough cleaning.27. switch off解析：关(电灯,机器)例句：Please switch the light off before leaving the room.Last night you forgot to switch off the television.Tips：turn off解析：关上例句：In order to save electricity, please turn off/ switch off all the lights when you leave the room.switch on, turn on解析：打开例句：The air conditioner is set to switch on at ten o‟clock.He forgot to turn on the radio and thus missed his favourite programme.28. lock解析：v. (用锁)锁上例句：She locked her jewels in the safe.Before you leave home, lock all the doors.29. test解析：v. 试验例句：After I made a model plane, I tested it.The new drug will be tested first on animals.30. encourage解析：v. 鼓励例句：My English teacher always encourages us to study hard.The boss encouraged us to work better for the company.Tips：en + courage (n.) 勇气→encourage (v.) 鼓励例句：He lacks the courage to speak in public. So all his friends encourage him to take part in the speaking competition.31. behave解析：v. 表现例句：He behaves well at school.These children didn‟t behave themselves when their parents were away.32. polite解析：adj. 有礼貌的例句：I‟ve never seen such a polite clerk.We received a polite letter from the general manager.Tips：polite (adj.) + ly→politely (adv.) 礼貌的polite (adj.) + ness→politeness (n.) 礼貌im + polite (adj.)→impolite (adj.) 无礼地,粗鲁的例句：Polite people are always welcome.You should serve our guests politely.I like her because of you not to answer the question.33. staff解析：n. 全体职工例句：The school‟s teaching staff are excellent.We are deadly short of staff at present.34. customer解析：n. 顾客例句：The new store across the road has taken away most of my customers.These goods are popular among the customers.语法：1.情态动词can, could1. 表达“能力”。

关于电的使用用途危险性英语作文

关于电的使用用途危险性英语作文Electricity is Amazing and Dangerous!Electricity is one of the most amazing and useful things humans have ever discovered. It lets us have light at night, charge our phones and tablets, watch TV, and even make the refrigerator keep our food cold! Without electricity, our lives would be really different and a lot harder. But electricity is also very dangerous if we don't use it properly and safely. That's why it's so important for kids to understand how electricity works and how to stay safe around it.What is Electricity?Electricity is a form of energy that comes from the movement of tiny particles called electrons. Electrons carry a negative charge of electricity and they move through certain materials called conductors like metals and wires. When the electrons move from one place to another, it creates an electrical current that powers things like light bulbs, motors, and circuits in our electronics.There are different ways to generate electricity. One common way is by burning fuels like coal, natural gas, or nuclear materials to create heat, which then makes steam to spinturbines that generate the electricity. Another way is through renewable sources like solar panels that capture energy from the sun, or wind turbines that use the wind's motion. No matter how it's generated though, electricity has to travel through wires and cables to reach our homes and power everything we use daily.The Many Uses of ElectricityElectricity has so many important uses in our daily lives! One of the main things we use it for is lighting. Before electricity, people had to use candles, oil lamps, or fires for light at night. But with electric lights, our homes, schools, and streets can be easily illuminated with just the flick of a switch. Electric lighting has made it much easier and safer for us to see at night.Another huge use of electricity is for powering and running all of our modern electronics like TVs, computers, video games, smartphones, tablets, and so much more. Can you imagine life without your favorite gadgets and devices? I can't! Electricity also runs kitchen appliances like refrigerators to keep food fresh, ovens and microwaves for cooking, washers and dryers for cleaning clothes, and heaters and air conditioners to keep our homes at comfortable temperatures.At school, we use electricity to power the lights, projectors for showing lessons, computers in the computer lab, and evensome interactive whiteboards and tablets for learning. Electricity is essential for so many educational tools that help us learn and grow smarter.And don't forget about bigger things electricity powers like elevators to move between floors in tall buildings, escalators and people-movers at airports and shopping malls, factory machines that make our clothes, toys, and other products, and the motors that make trains, subways, and some cars move. Our whole modern world runs on electricity!The Dangers of ElectricityAs amazing and useful as electricity is, we always have to remember that it can be very dangerous too if we aren't careful around it. Electricity can cause serious shocks, burns, fires, and injuries if it isn't handled properly and safely. That's because electricity always tries to find a path to travel from its power source through conductors to the ground. If a person becomes part of that path and gets shocked, the electric current can burn the body's cells and tissues, damaging nerves and muscles. A bad enough shock can even stop your heart from beating!Water is an excellent electricity conductor, so anything electrical near water like a bathtub, pool, or sink is an extra danger zone. You should never use electrical appliances, tools, orelectronics near water sources where they could get wet and electrify the water. We've all seen the scary videos of a plugged-in hairdryer or radio dropping into someone's bathtub, which can be potentially deadly.Playing with electrical outlets, wires, cables, extension cords, or anything with an electric current can lead to shocks or electrocutions too. Every year there are sad stories of curious kids getting hurt from sticking objects into outlets, chewing on electrical cords, or dismantling electronics and getting shocked. We have to remember that even low-voltage shocks from things like fresh batteries can potentially stop your heart if the electricity passes through a vulnerable area.Another big danger from electricity is the risk of fires. If electrical systems, wiring, or appliances get old, damaged, or overloaded with too much electricity, the heat can spark flames that spread rapidly and cause devastating fires and property damage. That's why it's so important to have working smoke detectors, to replace frayed or damaged cords, don't overload outlets with too many plugs, and be very careful around exposed wires.Staying Safe with ElectricitySo with electricity being both incredibly useful but also potentially very dangerous, what can we do to use it safely? Here are some of the most important electrical safety tips all kids and families should follow:•Nev er put fingers, toys, or any objects into electrical outlets - this is a surefire way to get shocked. Use outlet covers or caps on unused outlets, especially if there are curious young kids around.•Don't chew on or play with electrical cords - not only is this a shock risk, but you could start a fire if you damage the cord's insulation. Keep cords tucked away neatly.•Don't overload outlets with too many plugged-in devices and cords - this can overheat things and start an electrical fire. Use surge protectors instead of joining multiple cords.•Keep all electrical devices and cords away from water sources like sinks, bathtubs, pools, and any liquids or moisture to avoid deadly shocks.•Never try to repair, take apart, or mess with electrical appliances, outlets, or wiring yourself - that's a job for trained professionals who understand electrical systems. One wrong move could be fatal.•Pay attention to warning signs of electrical problems like frequently blowing fuses or tripping circuit breakers, flickering lights, or a smell of burning or buzzing sounds from outlets or appliances.•Use electrical devices and tools only for their intended purposes and follow all instructions carefully. Misusing things electrically can easily start fires.•Keep metal objects away from electrical lines, outlets, and circuit boxes. Dropping a metal item across wires can "energize" it with electricity that could shock you.•Never fly drones, kites, model airplanes or balloons near overhead power lines where they could get caught and create a shock risk.•Draw an imaginary safety boundary of at least 10 feet around any downed or damaged power lines. The ground around them could be energized, so stay far away and call emergency services.•Install smoke detectors on every level of your home and test them regularly. Having working alarms can alert you quickly to any electrical fires.If you ever get shocked or witness an electrical accident or fire, tell a trusted adult immediately and call emergency services like 911 for help. Don't try to become a hero yourself around electricity's dangers.Electricity is such an incredible invention that has transformed our lives and daily routines immensely. But we have to learn to respect its power and potential dangers in order to use it wisely and safely. By following electrical safety rules from an early age, we can keep enjoying its many benefits while staying safe. Electricity is amazing, but we have to handle it with care!。

对于选物理类还是历史类的建议英语作文

对于选物理类还是历史类的建议英语作文全文共3篇示例，供读者参考篇1Choosing Between Physics and History - My AdviceHi there! My name is Jamie and I'm a 5th grader at Oakwood Elementary School. I love learning about all kinds of subjects, but two of my favorites are physics and history. I've been thinking a lot about which one I might want to focus on more as I get older. Both are just so fascinating to me in different ways!If you're also trying to decide between physics and history, let me share my thoughts on each subject. Maybe it will help you figure out which one is the better fit for you.First up, physics! I find physics completely mind-blowing. It's all about understanding how the entire universe works - the laws and principles that govern light, energy, forces, motion, and everything else in existence. Just let that sink in for a second...we're talking about the fundamental rules that every single thing follows, whether it's planets orbiting stars or a baseball flying through the air.In my opinion, physics is one of the coolest subjects ever because it explains the unexplainable. How does gravity work and why do objects fall? What is electricity and how does it flow? Why do hot objects cool down over time? These are the types of deep questions that physics tries to answer through careful observation, experimentation, and mathematical modeling.I get a real thrill from learning about groundbreaking physics theories and discoveries, like Newton's laws of motion, Einstein's theory of relativity, or the recent detection of gravitational waves. This stuff isn't just theoretical mumbo-jumbo either - our understanding of physics leads directly to world-changing inventions and technologies that improve our lives. Just think about things like smartphones, GPS systems, lasers, radiation therapy, and nuclear power - none of those would exist without physicists uncovering the rules of how the universe operates.Now on a personal level, I enjoy the logic and rational thinking involved in doing physics. There's a certain elegance in using mathematics to represent the physical world precisely. I feel like an intrepid explorer every time I learn a new physics equation or concept, getting one step closer to uncovering the secrets of the cosmos. While physics can definitely be challenging with all the math and complex theories involved,putting in hard work and persevering through those "aha!" moments is really rewarding.At the same time, I totally get why someone might be more drawn to history as their academic passion. The great thing about history is that it helps us understand ourselves - how our cultures, societies, and daily lives emerged over thousands of years through an intricate web of events, decisions, and movements.From an endless treasure trove of stories about pivotal battles, rights movements, ground-breaking leaders, and rise and fall of civilizations across the globe, the study of history illuminates where we came from and how we got to where we are today. It's endlessly fascinating to me how the tiny, seemingly insignificant actions of individuals managed to reshape the course of the world.What I love about history is how it captures the richness of human experiences - not just a sequence of dry facts and dates, but vivid accounts of struggles, hopes, failures and triumphs that make us contemplate our place in the world. Understanding different cultures and perspectives from the past also makes me appreciate the diversity of our modern world and the progress we've made, even if there's still more work to do.History is almost like one giant, messy anthology of the best novels and most dramatic tales you can imagine, filled with unbelievable twists, tragic losses, and hard-fought victories. Except these stories are all true and happened in the real world, making them all the more impactful in my opinion.At the same time, I'm drawn to how history isn't always black-and-white, but involves interpreting events through different lenses and perspectives. There's an art to being a good historian - sifting through the evidence, separating truth from bias, and painting a nuanced picture of what happened and why.I find it fun to play detective and analyze different sources to unravel the mysteries of the past.Those are just some of my thoughts on the awesomeness of both physics and history. As you can probably tell, I'm honestly quite torn between the two! On one hand, the opportunity to discover how the physical world works at the deepest level and contribute to human innovation is extremely appealing. But there's also the powerful draw of understanding our vast human story - the sweeping epics, clashing civilizations, andworld-shaping events that led us to where we are.My advice? Don't feel like you absolutely have to pick one over the other this very moment. You've got lots of time toexplore both subjects more deeply as you get older. For now, I'd recommend diving enthusiastically into whichever one piques your curiosity the most right now. That natural passion and excitement will sustain you as you tackle progressively more challenging physics or history coursework.But also make sure to keep at least one foot in the other door by taking some classes in that other subject area. Even if you don't end up majoring in it, you'll likely find it enriching and complementary to your primary scientific or historical studies. Who knows, you may even discover a love for combining both fields through something like the history of scientific discoveries and theories!At the end of the day, we're all students of this amazing universe we live in. Whether you choose to become a physicist uncovering the fundamental laws of nature or a historian shining a light on the human journeys that brought us here, both disciplines will give you a profound appreciation of the incredible world around us. The most important thing is to follow your sense of curiosity and wonder - physics and history will always be there waiting to blow your mind.Alright, that's my two cents after doing a lot of thinking about this tough decision myself! Let me know what you end upgoing with and if this rambling perspective from a 5th grader was at all helpful. No matter what path you take, I'm wishing you the best of luck unraveling all the mysteries and marvels that physics and history have to offer. Happy learning!篇2Should I Take Physics or History?Hello there! My name is Jamie and I'm a 5th grader at Oakwood Elementary School. I'm here to tell you about a really tough decision I had to make recently - whether to take physics or history as my elective class next year. It was super hard to choose between the two! On one hand, physics seems really cool and exciting. But history is fascinating too, learning about all the amazing people and events from long ago. I went back and forth a million times before finally making my choice. Want to hear how I did it? Then just keep on reading!First up, let me tell you a bit about physics. Physics is the study of matter, energy, motion, force, and pretty much everything in the natural world around us. When you take a physics class, you get to learn mind-blowing stuff like how gravity works, what gives objects momentum, the secrets of electricity and magnetism, and more! You even get to do lots ofhands-on experiments to see the laws of physics in action. From building simple machines to dropping things and timing how fast they fall, physics class is full of activities that make you feel like a real scientist. How cool is that?One of the reasons physics seemed so appealing to me is that it helps explain the "why" behind so many of the phenomena we see every day. Why does a ball bounce back up after you throw it against the ground? Physics can tell you! Why does a compass always point north? The answer lies in electromagnetism, which you study in physics. Knowing the reasons that things happen in our physical world is just fascinating to me.But as awesome as physics is, part of me was feeling really drawn to taking history instead. Learning about the past has always been a passion of mine ever since I was a little kid. My parents used to read me stories about ancient Egypt, the American Revolution, and other pivotal moments in world history. The tales of courageous leaders, epic battles, and world-changing discoveries completely captivated me. I used to act out scenes from the books, pretending to be heroes like Harriet Tubman, Neil Armstrong, or Marie Curie. Even now, I still spend hours reading about history for fun.In a history class, you get to travel back in time and walk in the footsteps of legendary figures who shaped civilizations. Can you imagine how electrifying it would be to learn firsthand about powerful empires like Rome, great explorers journeying into the unknown, the struggles and triumphs of the Civil Rights Movement? Your history textbooks come alive with tales of innovation, conquest, and progress that show how we got to where we are today.What ultimately made me choose history over physics was picturing myself in the classroom. Don't get me wrong, the experiments in physics would definitely be thrilling. But I knew in my heart that I would get totally absorbed in the history lessons in a way that just wouldn't happen during a physics unit. Listening to my history teacher recount the heroic stories of Susan B. Anthony, Galileo, and Martin Luther King Jr. would give me full-body chills. Discussing and debating how momentous events like the American Revolution orWorld War II altered the course of humanity would set my mind on fire. I just have this inexplicable passion for examining our ancient roots and learning from past glories and failures.That's not to say physics wouldn't be extremely valuable and interesting too. In fact, part of what made the decision sodifficult is that both subjects are important in wildly different ways. Physics helps nurture critical thinking, problem solving abilities, and a scientific understanding of the physical world. Those are incredibly useful skills that could lead to careers in engineering, biochemistry, computer science, or many other amazing fields. Maybe I'll take physics further down the road.But for now, learning about history and the context of how our modern age emerged is what's tugging hardest at my curiosity. From prehistoric humans developing the first tools, to ancient Greece birthing democracy, to England ruling the seas during the Colonial era, to Neil Armstrong taking one giant leap on the moon, every era laid the groundwork to get us where we are today. How could I not want to dive deeply into those stories and soak up all those lessons from the past? Time travel may not literally be possible yet, but becoming a historian is the next best thing in my book!At the end of the day, the choice between physics and history came down to where my passion and interests lie at this stage of my life. As I mentioned before, both subjects are immensely valuable for different reasons. But for me personally, hearing the tales of history's legends, learning how civilizations toppled and rebuilt, and developing a rich context for the worldwe live in today feels like the perfect path for this phase of my education.Physics, with its exciting experiments and mind-bending principles, will always be there for me to explore down the road if I want. But these precious years of childhood, when my thirst for knowledge is at an all-time high and my mind is like a sponge, are the perfect time for me to drink up all the stories, struggles, and larger-than-life figures that history has to offer. Years from now when I'm an adult, I'll still be able to vividly recall the life lessons and panoramic view of humanity's journey that studying history provided.So that's my advice if you're trying to decide between physics and history - go with whichever one sets your heart on fire the most right now! They're both extremely enriching topics, just in vastly different ways. For me, history's epic tales of heroes, empires, and world-altering events are what's calling to my curiosity at this point in my life. But who knows, maybe a few years from now I'll be just as enthusiastic about the laws of motion, thermodynamics, and electromagnetism that make our universe tick. The great thing is that the opportunity will still be there for me to explore those scientific wonders when I'm ready.For now though, I'll learn all I can about the amazing chapters and characters that make up the story of humankind. From prehistoric inventors to modern day pioneers, history is just waiting toShare all its mind-blowing secrets with me. Next year's class can't start soon enough - I can't wait to walk through those classroom doors and begin my latest adventures in time travel! History, here I come!篇3Should I Pick Physics or History? A Kid's GuideHi friends! My name is Jamie and I'm 10 years old. I love learning about all kinds of cool stuff in school. But there's one big decision coming up that has me stumped - should I focus more on physics or history?Both subjects are super fascinating to me. With physics, I get to learn all about how the universe works. We study forces, energy, motion, light, sound, electricity and more. It's like getting to go behind the scenes of reality! We even get to do awesome experiments and see the concepts in action. Just last week, we made little rockets out of film canisters and launched them across the classroom. It was epic!But then history is also incredibly interesting. Learning about all the people, cultures, events and civilizations that came before us is like traveling through time. We get to study ancient societies like the Egyptians, Greeks and Romans. We learn what life was like centuries ago and how the world gradually changed and progressed. Last month, we even made our own versions of medieval catapults and siege weapons. Getting hands-on with activities from the past is so much fun.So you can probably see why I'm having such a hard time deciding which subject to focus on more. They're both endlessly fascinating in their own unique ways. Sometimes I'll be learning about the forces that make an airplane fly, and I'll think "Physics is definitely the coolest!" But then we'll start a new history unit on explorers like Christopher Columbus and Ferdinand Magellan, and I'll be blown away by their daring adventures and think "No, wait, history is where it's at!"Maybe looking at the pros and cons of each subject will help me figure this out. Let's start with physics:Pros of Physics:You get to learn how pretty much everything in the universe works - that's applicable everywhere!The experiments and hands-on activities make it super engaging and fun.Physics has tons of awesome real-world applications in engineering, technology, medicine and more.The logic and problem-solving skills you develop can help with other subjects too.Cons of Physics:All the math can sometimes be pretty challenging and confusing.Some of the concepts, like quantum physics, can become extremely complex.The subject matter can feel a bit dry and abstract compared to other fields.Okay, now let's look at the pros and cons for history:Pros of History:You get to go on amazing journeys through the past and learn about all humans before us.The stories of ancient civilizations, wars, explorations, etc. are drama-filled and captivating.You develop a deeper understanding and appreciation for world cultures.The hands-on projects like building models and reenactments are really fun.Cons of History:With so many events, dates, names and places to remember, it can get overwhelming.While fascinating, studying the past doesn't always have obvious modern-day applications.It can be sadder learning about conflicts, injustices and the dark side of human history.Hmm, looking at the lists, I can definitely see great reasons to really delve into either subject. And the truth is, both physics and history are vital fields of study that have deepened human knowledge immensely.Physics has helped unlock the mysteries of the universe, leading to ground-breaking technologies that have revolutionized our world. It has expanded our understanding of natural laws, energy, forces, and the building blocks of matter and existence itself. Pretty much every modern convenience we enjoy today was made possible by pioneers in physics.At the same time, history has helped us understand ourselves – how civilizations, cultures, and societies emerged, evolved, flourished and faded over thousands of years. By studying the triumphs and mistakes of the past, we can hopefully learn from them and create a better world for the future. History has shaped everything about our modern era, from our governments and economies, to our arts and traditions.So in many ways, both subjects have been invaluable parts of the human journey of knowledge and progress. Physics has revealed the fundamental workings of our universe, while history has helped reveal the fundamental workings of our own human existence and identity.With all that in mind, I don't think I can go wrong by pursuing a deeper path in either physics or history. My strengths and interests will likely guide me more towards one subject over time. Maybe I'll even find a way to combine my passion for both fields somehow. Like studying how the technology and applied physics has impacted and shaped human civilizations throughout history. Or looking at how major historical events led to new physics discoveries and scientific revolutions. That actually sounds like the perfect blend of my two loves!For now though, I'll just keep an open mind to both the wonders of physics and the wonders of history. With curiosity as my guide, I'm sure I'll forge an educational path that brings me years of fascination, discovery and joy in whichever direction I go. The most important thing is to keep exploring! There's a vast, amazing world and universe out there just waiting to be uncovered.。

关于电的英语作文初一

The Magic of Electricity in Our Daily LifeElectricity, a force that we encounter every day, is an essential part of our modern world. It powers our homes, schools, hospitals, and factories, making our lives convenient, comfortable, and productive. But what exactlyis electricity, and how does it work?Electricity is a form of energy that results from the movement of charged particles, known as electrons. These electrons flow through conductors, such as wires or metal, creating an electric current. This current can be harnessed and controlled to perform various tasks, from powering a light bulb to operating a complex industrial machine.Electricity is generated in a variety of ways. The most common method is through the use of generators, which convert mechanical energy into electrical energy. These generators can be fueled by coal, gas, nuclear energy, or renewable sources like solar and wind power.In our homes, we use electricity for a wide range of activities. From charging our phones and laptops to watching television and using the internet, electricity isan integral part of our daily lives. It powers our kitchen appliances, such as refrigerators and microwaves, and helps us keep warm in winter with our heaters and electric blankets.Electricity also plays a crucial role in safety. Smoke detectors and security systems rely on electricity to alert us to potential dangers. In hospitals, electricity powers life-saving equipment, such as ventilators and defibrillators, keeping patients alive.However, electricity can also be dangerous if not handled properly. Electric shocks can cause serious injuries, and electrical fires can be destructive and deadly. It is, therefore, essential to use electrical appliances safely and follow safety guidelines to prevent accidents.In conclusion, electricity is a remarkable force that has transformed our world. It powers our lives, connecting us to information, entertainment, and each other. As we continue to rely on electricity, it is important to appreciate its value and use it responsibly, ensuring its safe and efficient use for future generations.**电在我们日常生活中的魔力**电，这种我们每天都会遇到的力量，是我们现代世界的重要组成部分。

Electricity：今天背优点和安全用法

Electricity：今天背优点和安全⽤法Make electricity a good servantBeginning1. ‘Electricity’ is another word for ‘life’.2. As we all know, electricity works everywhere.3. As the saying goes, ‘Every coin has two sides.’ So does electricity.4. It can be easily proved（证明） that electricity is very important in our life.5. Obviously（显然地）, almost everyone today uses electricity in one way or another.6. Without any doubt, electricity is necessary and helpful in our daily life.7. To my mind, it’s hard to imagine what life in our cities would be like without electricity.8. There is no doubt（怀疑） that electricity is a good servant but it is a bad master.Advantages:1. Electricity changes our life.2. Without electricity, our life will be less enjoyable and convenient.3. We can change electricity into different kinds of energy.4. We use different kinds of electrical appliances. They give us light and heat.5. Electricity lights streets and buildings, and warms people and animals.6. Electricity heats food in cookers and cools it in fridges.7. Electricity drives trains and works traffic lights and lifts.8. Electricity also works the machines in factories that make all kinds of goods.9. Housewives need electricity to do housework and office workers need electricity to work on computers.10. Cookers need electricity to cook food.11. Traffic lights need electricity to work normally.12. In villages and on farms, electrical machines milk the cows and chop（切） their food.Danger:1. If we don’t use electricity carefully, it can be very dangerous.2. We may get an electric shock if we don’t use it properly（正确地）.3. Electricity may cause fires or accidents.4. Electricity may hurt or even kill people.How to use electricity safely:1. To use electricity safely, there are at least three things we should do.2. According to my personal experience, we should always remember to be careful with electricity.3. It’s dangerous to play with electricity.4. We shouldn’t use a dryer in the bathroom.5. We should unplug（拔掉插头） electrical appliances when we don’t need to use them.6. We shouldn’t touch the socket（插座） if our hands are wet.7. We shouldn’t play near pylons（⾼压线）.8. We should check wires and electrical appliances in our houses regularly（定期地）.Conclusion:1. By doing these simple things, we surely can use electricity safely.2. In brief, if we use electricity properly, we can enjoy our life happily.3. As the saying goes, ‘Custom makes all things easy.’（有个好习惯，事事皆不难） If we use electricity carefully every day, it can surely be a good servant.4. In conclusion, we should make good use of electricity. It can be a good servant and help make our life more convenient and effectively（有效地）.5. So we can’t live without electricity but we must use it carefully and safely.Write a paragraph with at least 60 words on the topic of ‘Make electricity a good servant.’Suggested outline:1. What good is electricity? / Why is electricity important to us?2. Why is electricity dangerous sometimes?3. How can we use electricity safely? / What can we do to make electricity a good servant?基础篇In my opinion, ‘electricity’ is another word for ‘life’. It lights streets and buildings, and warms people and animals. However, It’s dangerous for us to use electricity carelessly. Electricity may hurt or even kill people.So we should often check wires in our houses. We shouldn’t play with electricity. By doing these things, we can make electricity a good servant and enjoy our life happily.提⾼篇(1)As we all know, ‘electricity’ is another word for ‘life’. We use a lot of electrical appliances every day.However, if we don’t use electricity carefully, it can be very dangerous. It may hurt or even kill people. So we should check wires and electrical appliances in our houses regularly. And we shouldn’t play with electricity.By doing these simple things, we surely can make electricity a good servant and then enjoy our life happily.提⾼篇(2)It can be easily proved that electricity is very important in our life. Every day, we use different kinds of electrical appliances to make our life more enjoyable and convenient. For example, electricity lights streets and buildings, and warms people and animals.However, as the saying goes, ‘Every coin has two sides.’ Electricity can be very dangerous if we don’t use it carefully. It may hurt or even kill people as well as cause fires or accidents. To use electricity safely, we should check wires and electrical appliances in our houses regularly. What’s more, we shouldn’t touch the socket if our hands are wet or play near pylons.In brief, only when we use electricity properly, we can make it a good servant and then enjoy our life happily.Save ElectricityWrite a paragraph with at least 60 words on the topic of ‘Save Electricity.’Suggested outline:1. What would our daily life be like without electricity?2. What should we do to save electricity?Electricity is becoming more and more important nowadays. Nearly all the appliances in our houses are driven by electricity. Without electricity, we can’t watch TV, surf the Internet, use the washing machine or even read or write in the evenings.So let’s take action right now. We just need to do some easy things, such as turning off the light when leaving, using the air conditioner less, reminding our relatives and people around us to save electricity or calling on（号召） the students to do so.Electricity and our lifeWrite a paragraph with at least 60 words on the topic of ‘Electricity and our life.’Suggested outline:1. What’s the relationship between electricity and human beings?2. What role does electricity play in our daily life?3. Why should we use electricity carefully?Electricity is closely related to our daily life. Many things use electricity. For example, the electrical appliances we use in the office or at home need electricity to work. Without electricity, we can neither watch TV, listen to music, nor play computer games. How terrible our life will be if there is no electricity! However, electricity is dangerous if we don’t use it in the proper way. So when we use electricity, we must be careful. If so, electricity can make our life colourful and comfortable.The importance of electricityWrite a paragraph with at least 60 words on the topic of ‘The importance of electricity.’Suggested outline:1. How do we use electricity nowadays?2. Why is electricity so important to our daily life?3. What can we do to save electricity at home or at school?Electricity is very useful in our daily life. With the help of electricity，we can do many things. We can turn on lights when it is dark. We can turn on air conditioners when we feel hot. We need electricity so much. Life will be very hard without electricity in the modern world. But there is not enough electricity, so we mustn’t waste it and must save it. When we leave a house, we must turn off the lights. When we don’t watch TV, we must turn it off to save electricity.。

中考物理英语试卷

Part I Listening Comprehension (25 points)Section A (5 points)In this section, you will hear five short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 1 with a single line through the center.1. A) The man is tired. B) The woman is tired. C) The woman needs a break. D) The man needs a break.2. A) The man will help the woman. B) The woman will help the man. C) They will go to the cinema together. D) They will go to the library together.3. A) The woman is a teacher. B) The man is a teacher. C) The woman is a student. D) The man is a student.4. A) The man is going to the beach. B) The woman is going to the beach.C) They are going to the beach together. D) They are not going to the beach.5. A) The man is a doctor. B) The woman is a doctor. C) The woman needs to see a doctor. D) The man needs to see a doctor.Section B (20 points)In this section, you will hear a passage three times. When the passageis read for the first time, you should listen carefully for general ideas. When the passage is read for the second time, you are required to fill in the blanks with the exact words you have just heard in the passage. For blanks numbered 6 to 10, you are required to fill in the missing words. For blanks numbered 11 to 14, you are required to fill in the missing information. You can either use the exact words you havejust heard or write down the main content.Passage: In the past, many people thought that the Earth was flat. However, in the 3rd century BC, a Greek scientist named Eratosthenes made an experiment to prove that the Earth was round. He measured the angle of the sun's shadow in two different cities and found that the angle was different. From this, he concluded that the Earth was round. Over time, more evidence was found to support his theory. Today, we know that the Earth is not perfectly round, but it is still a sphere.6. _______ thought that the Earth was flat in the past.7. _______ was a Greek scientist who made an experiment to prove that the Earth was round.8. _______ were used to measure the angle of the sun's shadow.9. _______ were found to support the theory that the Earth is round.10. _______ is still a sphere today.Part II Reading Comprehension (30 points)Section A (15 points)Read the following passage and answer the questions below it.The sun is a massive ball of hot gases that emits light and heat. It is the center of our solar system and provides energy for life on Earth. The sun is about 4.6 billion years old and is located about 150 million kilometers from Earth. The sun's core is extremely hot, with temperatures reaching up to 15 million degrees Celsius. This heat is produced by nuclear fusion, which combines hydrogen atoms to form helium.Questions:11. What is the sun?12. How old is the sun?13. How far is the sun from Earth?14. What is the core of the sun like?Section B (15 points)Read the following passage and answer the questions below it.Electricity is a form of energy that is produced by the flow of electrons. It is used to power many devices and appliances in our daily lives. The unit of measurement for electricity is the ampere (A), which represents the flow of one coulomb of charge per second. The voltage (V) is the measure of electrical potential difference, and the power (P) is the rate at which energy is consumed or produced.Questions:15. What is electricity?16. What is the unit of measurement for electricity?17. What does voltage represent?18. What is power?Part III Writing (25 points)Write an essay of about 150 words on the following topic:How has technology changed our lives?You should write neatly on Answer Sheet 2. Do not write your name in the essay.Remember to write clearly and coherently.End of the Test。