2021年九年级物理下册 5. 电能表与电功学案(新版)苏科版(I)
九年级物理下册电能与电功电功率专题复习教案苏科版
九年级物理下册电能与电功电功率专题复习教案苏科版一、教学目标：1. 理解电能、电功和电功率的概念及其关系。
2. 掌握电能、电功和电功率的计算方法。
3. 能运用电能、电功和电功率的知识解决实际问题。
二、教学重点：1. 电能、电功和电功率的概念及其关系。
2. 电能、电功和电功率的计算方法。
三、教学难点：1. 电能、电功和电功率在实际问题中的应用。
四、教学方法：采用问题驱动法，引导学生通过自主学习、合作探讨的方式，掌握电能、电功和电功率的知识，提高解决实际问题的能力。
五、教学过程：1. 回顾电能、电功和电功率的概念，引导学生明确它们之间的关系。
2. 通过例题，讲解电能、电功和电功率的计算方法，引导学生掌握解题技巧。
3. 开展小组讨论，让学生运用电能、电功和电功率的知识解决实际问题，分享解题过程和心得。
5. 布置课后作业，巩固所学知识。
教案内容需进一步细化，包括具体的例题、小组讨论的问题等，请根据实际教学情况进行调整。
六、教学评价：1. 通过课堂提问、作业批改等方式，了解学生对电能、电功和电功率概念的理解程度。
2. 通过小组讨论和课后作业，评估学生运用电能、电功和电功率知识解决实际问题的能力。
3. 结合学生的学习态度、参与程度等方面，全面评价学生的学习效果。
七、课后作业：1. 请用一句话概括电能、电功和电功率的概念及其关系。
2. 请列出计算电能、电功和电功率的公式，并解释各符号的含义。
3. 请在下面的问题中，选择一个自己感兴趣的，用所学知识解答：a. 家庭电路中的用电器如何选择合适的电功率？b. 如何根据电能表的读数计算家庭一个月的用电量？八、教学反思：在课后，教师应认真反思本节课的教学效果，包括学生的学习兴趣、参与程度、知识掌握程度等，以便对教学方法进行调整，提高教学质量。
九、教学拓展：1. 引导学生关注电能、电功和电功率在新能源开发和节能减排方面的应用。
2. 邀请相关领域的专家或企业人员，进行专题讲座或实地考察，加深学生对电能、电功和电功率的理解。
2021年九年级物理下册 5. 电能表与电功教案 苏科版(2)
2019-2020年九年级物理下册 15.1 电能表与电功教案1 苏科版【教学时间】_______ 【教者】【教学目标】1.通过观察，知道电能表的作用，了解电能表的技术参数，学会认读电能表，会利用电能表计算电路中消耗的电能。
2.通过实验，理解电流做功的本质。
3.通过思考，利用串、并联电路的特点，设计“验证影响电功大小因素”的实验方案。
4.通过学习，树立和强化节电环保的意识。
【重点、难点】【教学方法】【教学过程】一、情景导学：二、目标定学：三、预习探学：1．电能表是用来直接测量的仪表，它的计量单位是。
1度= 焦耳。
2．某电能表上标有“220 V 3 A ”和“3 000 R ／kw ·h ”的字样，其中“3 A ”是指 ，3000R ／kW ·h 是指 。
3．小明家的电能表在4月底抄表时的示数是 在5月底抄表时的示数是 小明家在5月份实际消耗的电能是 kw ·h4．电流做功的特点：电流做功时，把 能转化为 能。
四、合作互学和交流助学：1．点拨：电流做功的过程，就是电能向其他形式能转化的过程,也是消耗电能的过程。
你的猜想依据是什么？3. 活动：探究电功大小与电压或电流大小的关系（1）想一想：1. 你要用哪些实验器材？作用分别是什么？2. 如何比较电功的大小？用到了什么物理研究方法？3. 如何控制电流或电压电相等？用到了什么物理研究方法？（2）进行试验（3）结论一：。
结论二：。
4. 点拨生活经验告诉我们，当电压和电流相同时，用电器通电时间越长，电流做功就越多。
5. 总结与归纳。
表达式：。
6. 例题：电能表表盘上标明1200r/kW·h，将某用电器单独接在该电能表上，当用电器工作了5分钟后，电能表的转盘转过60r，(1)求该用电器消耗的电能？(2)若用电器额定电压为220V，求通过该用电器的电流？五、总结提学六、达标检学：【板书设计】【教后反思】27659 6C0B 氋36143 8D2F 贯f 26681 6839 根31593 7B69 筩39545 9A79 驹932571 7F3B 缻23194 5A9A 媚9H635696 8B70 議。
2019-2020年九年级物理下册 15.1 电能表与电功学案3(新版)苏科版
2019-2020年九年级物理下册 15.1 电能表与电功学案3（新版）苏科版学习要求1．知道电能表是测量电功的仪表.会用家用电能表初步测量家庭用电的电功.2．会根据家用电能表的表盘数据计算电功.3．知道电功的概念及其单位.理解电功的公式.6．会对一些家庭用电器进行简单的电功计算.7．培养理论联系实际的学习习惯.学习指导1．理解电流能够做功电流通过导体是否能做功，就看电流通过导体时，是否可以将电能转化成其他形式的能．电流通过电动机线圈时，电动机便转动起来，可以提升重物，同时线圈也会发热，这时电能转化成机械能和内能；电流通过电灯泡时，灯丝发热发光，电能转化成内能和光能，这说明电流通过导体的过程中，伴随着能量转化的发生，所以我们说：电流通过导体能做功．2．知道电流做功与哪些因素有关通过实验探究我们知道，影响电流做功的因素是：通过电路的电流和加在电路两端的电压，以及通电时间。
3．弄清规律和公式的适用条件任何物理规律和公式都有它的适用条件，弄清规律和公式的适用条件是学好物理必须注意的问题．电功的公式W=UIt是计算电功普遍适用的公式，对于任何类型的用电器（或电路）都适用．而结合欧姆定律I=U/R推出的电功公式= I2Rt，不适用于含有电动机的电路，只适用于电烙铁、电炉等纯电阻电路，即只适用于电能全部转化为内能的电路．4．知道电能表的作用及其主要数据的意义和作用电能表俗称电度表或火表，是用来测量电功或记录电路中消耗电能多少的仪表．电能表计数的单位是千瓦·时（kW·h），俗称度．1kW·h＝3.6×10６Ｊ．典型范例例1．一个阻值为10Ω的电阻器接在电压是3V 的电源上，它通电5min 电流做的功是多少？ 精析：在运用电功公式W=UIt 计算时，要注意U 、I 、t 三个量的单位必须统一，均使用国际单位。
题中电流是未知的，可以用欧姆定律I =U /R 计算出通过电阻器的电流,再用W=UIt 计算电功．全解：根据欧姆定律A=0.3A ，W=UIt =3V ×0.3A ×5×60s=270J ．电流做功为270J.点评：如果能熟练运用电功公式的推导式，可以不先求出I ，而直接将欧姆定律和电功公式综合起来，即用，将更加快捷方便.例2．一位同学家上周末电能表的示数是本周末示数为，该家庭本周用电 kW ·h. 若电能表铭牌上标有“3000 r/kW ·h ”，则这周内电能表的转盘转 圈.精析：本题考查了两种测量电能的方法：一是用计数器的示数之差计算电能，二是根据转盘转过的转数计算电能.全解：（1）注意最后一位虚线框内的数据为小数，则本周消耗的电能为：W =W 2-W 1=1341.5kW ·h-1326.2kW ·h=15.3kW ·h ．(2) 题中已知消耗电能15.3kW ·h ，则转数为：15.3kW ·h ×3000r/kW ·h=4590r.点评：从本题可以看出：若用电器用电较多，时间较长，应通过计数器测量消耗的电能；若用电器用电较少，时间较短，应用数转盘转过转数的方法也可算出消耗的电能。
苏科版九年级下册物理教案：15.1 电能表与电功
给我一个支点，可以撬起整个地球。
——阿基米德§15.1 电能表与电功【学情与教材分析】在本节教学内容学习之前，学生已掌握了电学知识中的中心知识环节《欧姆定律》内容，知道了串联电路和并联电路的电流电压的基本规律与特征；经过机械能和内能的学习，初步知道了功与能的关系，知道了功和能的单位都是J，做功是能的改变过程，做多少功就改变多少能。
同时经过一年多的训练，学生已较熟练地掌握了用控制变量的方法设计实验，进行科学探究的基本方法，具有了较好的逻辑思维能力、创造思维能力以及发现问题、分析问题、解决问题的能力。
学生具有的这些知识储备和能力为本节的学习打下了良好的基础。
电功的知识是本章的重点之一。
第一部分教学内容是电能表知识的学习，教材从实际生活中交纳电费的事例出发，引入了测量消耗电能的仪表电能表，在观察电能表主要技术参数指标的基础上，掌握用电能表测量电能的两种方法：1，利用电能表示数变化，2利用转盘转过的圈数。
了解电能的实际单位KWh和标准单位J的换算关系，知道用公式W=Pt计算电功时，灵活运用两套单位的选择。
本节教学第二部分，力求在教师的引导下充分发挥学生的认知主体作用，通过教师的适当点拨和学生的积极参与，知道电流做功的实质的前提下，进一步探究影响电流做功的大小的因素，通过控制变量的方法设计实验，通过转换法，利用灯泡发光，电能转化光能，根据灯泡亮度，知道单位时间内消耗电能的多少，定性分析归纳出电功的公式，为以后章节内容的学习打下一个良好的基础。
同时本节课通过对实验设计的讨论，使学生进一步掌握利用控制变量的方法设计实验，教学中利用控制变量法对电功概念和公式的理解，培养学生逻辑思维能力、创造思维能力以及发现问题、分析问题、解决问题的能力。
本节教学我设想分两课时，这是第一课时，主要是完成本节知识点的教学，第二节着重与知识与能力的拓展训练，例如用电能表测电能的基础上，配合计时工具，利用P=W/t.测用电器的功率，做到与下节《电功率》教学的无缝衔接。
2019-2020年九年级物理下册 15.1 电能表与电功学案 苏科版 (I)
理查德情况很不妙It doesn't look good, Richard.实际上坦白说很糟糕In fact, to be quite frank, it looks pretty bad.与其拐弯抹角Rather than beat around the bush,我会直接跟你说出来I'm just gonna come right out and say it.理查德你得了四期肺癌stage four lung cancer.肺癌临床上共四期第四期即为晚期你上背部感觉到的疼痛The pain you've been experiencing in your upper back 实际上是由你肺里的is actually the result of malignant tumors恶性肿瘤造成的within your lungs,很遗憾这情况已经挺久了which it sadly appears you have for some time.即使我们再早点发现As we're catching this late in the game,你的癌细胞还是会机会扩散your cancer has also had the opportunity to spread尤其会往你的脊椎和肾上腺转移specifically to your spine, and adrenals.你应该通知学校You wanna put in notice with the college.并尽快告诉维罗妮卡还有你女儿You should notify Veronica and your daughter治疗立即就要开始as soon as possible as treatment will begin immediately. 我还有多长时间How long are we talking?积极治疗的话一年With treatment, a year,如果足够幸运的话或许一年半a year and a half, if you're lucky.不治疗呢And without?大概半年Probably six months.我很抱歉理查德I am so sorry, Richard.教授草Fuck.这个季度极其棒So let's make this a fantastic quarter.我们一直缺的那块资金现在补上了We get that extra little bit of funding that we so desperately need. 还有问题吗Uh, any questions?操♥你♥大♥爷♥Fuck.额就这样散会What...? Uhm... Okay.干Fuck.操妈♥逼♥上帝Jesus fucking Jesus.耶稣上帝干Jesus. God. Fuck.草泥马狗♥杂♥种♥Fucking bastard!干♥你♥妹耶稣Fuck! Jesus!去死吧Fuck it, huh?去你♥妈♥的♥上帝Fucking God!操♥你♥妈♥逼Fuck you!你♥妈♥的♥ 为什么Fuck you.该死Fuck.第一章我有些话想说无神论者会做祷告吗Shall the atheist say grace then?闭嘴理查德Shut up, Richard.当然亲爱的Of course, my dear.我倒是有些话想说I actually have something I wanna say.说吧孩子想说什么Go ahead, kid. What do you got?我想让你们知道我是同性恋I wanted you to know that I'm gay.你在开什么玩笑What on Earth?我的老天爷Jesus Christ.奥莉维亚我以为是什么很糟的事呢Olivia, I thought it was something bad.不你可不是同性恋奥莉No, you're not, Olive.你说我不是什么意思What do you mean I'm not?你不是同性恋我是说你不是拉拉You're not gay. I mean, you're not a lesbian.不我是Yeah, I am.不我知道自己的性取向Yeah. No, I think I'd know my own sexual preference. 呃这只是人生中一个阶段Uh, it's just a phase.我个人认为觉得这太棒了I, for one, think it's fantastic.别安慰她Don't placate her.我不是在安慰我女儿I'm not placating my daughter.你怎么敢就这样否定我How dare you deny me like this.我没有反对你宝贝I'm not denying you, sweetheart.我只是在否定以这种方式引起我们的注意I'm just denying your call for attention不管你认为这是什么就这样or whatever else this is. That's all.我比你自己更了解你奥莉I know you, Olive, better than you know yourself. 不妈妈你一丁点都不了解我No, mother. You know no shit about me.奥莉维亚快回来回来Olivia, please come back, sweetheart. Olivia.让她去吧Let her go.你教育子女的方式Your finesse of parenting...总是能惊到我has always amazed me.我也有话想说I also have something I'd like to say.我都等不及了I can't wait.我出轨了I'm having an affair.我出轨了我想你应该知道I'm having an affair and I thought you should know. 你为什么认为我应该知道And why did you think I should know?因为对方是亨利Because it's with Henry.哪个亨利Henry who?亨利·怀特Henry Wright.-亨利·怀特 -对- Henry Wright? - Uh-hmm.我的老板吗My boss?不不行不可能No, no, no, no.维罗妮卡这太恶心了Veronica. That's real revolting.你疯了吗拜托Are you out of your mind? Come on.至少出轨的对象有点品位吧At least have a little bit of taste in your infidelity. 这是你的事但我♥干♥过泳池救生员It's up to you, but I'd fucked a pool boy myself还是水管工我忘了or a plumber.然后我就软了Then had some fucking nutless sack.我向你保证一点都不空虚I assure you it's not empty.什么What?因为天佑亨利有一个额外的睾丸Henry has been blessed with a spare testicle.天佑亨利有一个额外的睾丸Henry was blessed with a spare testicle?你确定这不是囊肿或肿瘤吗Are you sure it's not a cyst or a cancerous growth? 你还在乎吗Do you even care?关于他的三个卵蛋吗About his third nut?不不我不在乎No. No, I don't.在我看来房♥地♥产♥As far as I'm concerned, that real estate's早就失去了投资价值lost its value long ago.你真是个混♥蛋♥You're such an ass.我承认Self-admitted.所以为我们神圣的婚姻干杯吧So let us drink to our holy matrimony.你自己喝吧Drink by yourself.不错的建议Much better idea.呃你想告诉我们什么Ugh. What was it you wanted to tell us?我我担心牛排煮太久了I was, uh, afraid I overcooked the steaks.真是个混球Such an asshole.不但她根本不是这么说的No, but that's not what she's saying at all.她是在为整个女权运动奠定基础She's laying the groundwork for the whole feminist movement. 继续Go on.就像一百年前那样Like a hundred years in advance and...那是什么What was that?噢Oh.你不做些什么吗Aren't you gonna do anything?比如说Like what?我不清楚打电♥话♥什么的I don't know. Call someone.你和它是朋友吗Were you friends with it?你认识它吗比如名字Did you know it personally, by, like, by name?这就是只该死的鸟It's a fucking bird.我不知道要给谁打电♥话♥I don't know who to call.-我能继续吗 -不不行- Can I continue? - No, you may not.噢谁的手♥机♥响了是你的吗Oh, whose phone is it? Is that your phone?该死Shit.好了是这位同学There we go. Here she is.抱歉Sorry.是我的对不起Mine. Sorry.我以为是振动模式但是Um, I thought it was on vibrate but it's...不不没事No, no, no, please,接电♥话♥ 站起来接电♥话♥ take your call. Stand up and take your call.来吧别害羞Please. Don't be shy.站起来接电♥话♥Stand up and take your call.哪位Hello.我回头再打给你我正在上课I'm gonna call you back actually because I'm in class.不真正在上课No, as in I'm in class.现在我正站着Right now. I'm standing up.我知道很奇怪好吧I know it's weird. Okay.再见再见再见Goodbye. Bye. Bye.真迷人Fascinating.我很抱歉I'm sorry.哦不必如此Oh, don't be.好了Okay.从现在开始From here on out,我们会和以往非常非常不同we're gonna do things very, very differently.在座的各位要是对此不感兴趣So for those of you who are not even remotely interested 现在就可以直接离开了in being here, please leave.只要走出门Just simply walk out the door结课必定能得到一个Cand you'll receive an automatic C.我没有多少时间可以浪费I no longer have time to be wasted我也不打算浪费你们的时间nor do I intend on wasting yours.所以对于那些So for those of you who receive grades of,比如说只能拿C 或是更糟的say, a C or worse,积极主动点let's just be proactive.带上东西走吧Pack up your shit. And vamos now.怎么样Hmm?不错继续Good. Here we go.如果你们有人打算学习商业If any of you have any intentions of studying business,现在就出去吧get the fuck out now.我不会再说第二遍I'm not gonna say it again.如果你低头发现自己穿着运动裤If you look down and you happen to find yourself in sweatpants 或者是带腰绳的裤子之类的or rather pants with the drawstring or something,请出去just please leave.最重要的一点Most important of all,如果你从来没有为自己内心的欢愉读过书if you've never read a book for our own internal pleasure...你不属于这里出去吧you don't belong here. Get out.如果你们有人发现自己If any of you find yourself属于上述任何一类falling into any of these categories.我保证你不会拿到比C更高分数I assure you, you will not do better than a C.继续Here we go.还有政♥府♥部门工作人员和从政者The government workers and the politicians included.运动裤可不仅仅是开玩笑The, uh, sweatpants comment is not a joke.我生病了感冒I'm sick. I have a cold.好了现在那些有兴趣Right. Now, for those of you who are interested in学习更伟大思想的人今天是时候了learning from greater minds, and there are today,你们负责读一本书you're in charge of reading one book这个季度只有一本书and one book only to this quarter.这样做之后你就可以站在这里After doing so, you will then stand up here开设你自己的课了and you will run a class of your own.干得漂亮现在是饮水机边的国王和皇后Excellent. There go the kings and queens of the water cooler,明天就是给大公♥司♥卖♥♥命的工作狂corporate whores of tomorrow.也许是C 也许不是C. Maybe not.然后你可以站在这里劝说你的同龄人And then you will stand up here and you'll persuade your peers 这项工作有多重要of the work's importance.为此你将得到一个BFor that, you'll receive a B.如果你能教我们一些新东西就能得到AIf you teach us something new, you receive an A.还有问题吗Any questions?额Um...啊哈对了还有一件事Ah-ha. Yes. One more thing.不能宣扬女权主义或同性恋No feminist or queer propaganda.我现在最不需要关心的事情The plight of unkempt women is truly the last thing就是不注重仪表的女人们的困境I would like to think about right now.我觉得你不能这么规定I don't think you can do that.我已经做了规定I just did.现在我将开启随心所欲And now, I shall embark on an emotional...狂欢的72小时bender for 72 hours.最可能的是我一个人喝酒Most likely, I'll be drinking alone我觉得那还行and I'm all right with that.因此结果就是课程取消So as a result, class is cancelled.结束That's it.下课Class dismissed.哦对了顺便问一句你们有人卖♥♥大♥麻♥ Oh, yeah, by the way, if any of you sell marijuana或者认识卖♥♥大♥麻♥的人or you know anyone who does,能在办公时间过来找我一下吗would you please visit me during office hours?谢了拜拜Thanks. Bye.什么鬼What the fuck?学术休假I need to go on sabbatical next quarter.是美国大学教师发展的一种重要制度形式每隔一定年限在全薪或减薪的情况下研究者外出休整一年或稍短的时间我会不我不会准你学术休假I would... No, I can't give you a sabbatical,那要一年呢it takes a year.准备学术休假的申请要一年的时间A year to get that kind of thing done.你得做点什么来加快速度You're gonna have to do something to speed it up.不我不能No, I can't.你要学术休假干什么What do you want to go on a sabbatical for?我想写出下一部美国最精彩的小说I would like to write the next great American novel.哦是吗Oh, yeah?或短篇取决于长度Or novela,depending on the length.关于什么What's it about?关于孤儿养兔子的故事It's gonna be about an orphan who raises rabbits or bunnies around there. 叫什么名字And what's it called?现在暂定的题目是寻找兔兔乐Right now, the tentative title is Bunny Fun Found因为她的名字叫兔兔奇怪的是because her name is Bunny and oddly enough,-她玩得很开心 -真是扯淡- she was having fun... - You're full of shit.你满嘴跑火车是在骗我You're full of shit. You're having me on.-皮特我得了癌症 -什么- I have cancer, Peter. - What?我得了癌症而且情况很不妙I have cancer and it doesn't get look good.天啊理查德Jesus Christ, Richard.我不想死在这里I don't want to die here.我不想死在像这样的地方I don't wanna die here like this.求你让我出去就让我孤独的死去Please get me out. Just let me die alone.让我平静地死去Let me die in peace.理查德Oh, Richard.不要在桌子上拉手No hands above the table.好吧Okay.是什么癌症What kind of cancer is it?是肺癌It's, uh, it's lung cancer.可你从不抽烟You don't smoke.不我现在可以抽了No. I can now.听着每个人都有可能这样Listen, this is what happens to everybody.这就是我们所有人不容逃避的现实It's what happens to all of us.我是说你也可能长满了这鬼东西I mean, you could be ridden with the same damn thing. 你为什么要对我说这些Why would you say something like that to me, huh?不我只是在表达论点很抱歉No, no. I'm making a point. I'm sorry.说出来意思就不太对了It came out wrong.-我很抱歉真对不住 -没关系- I'm sorry. I'm sorry. - That's allright.酒来了There you go.我真讨厌这些女人气的杯子I really hate these effeminate glasses.我们该怎么办What are we gonna do?我会把药柜装满I'm gonna fill my medicine cabinet.还有And...我要直接挺过去I'm gonna ride this thing out.等等你不接受治疗吗Wait, you're not gonna get treatments?不No.-你欠我的皮特 -是啊- You owe me, Peter. - Uh, yes.对是的当然Yes. Yes, of course.谢谢Thank you.你现在可以松开我的手You can let go of my hands now然后我们就能一块喝酒了and then we can have a drink maybe.-好 -谢了- Yeah. - Thank you.敬最后这几个月的时间So to the months end.为了你的健康To your health.不要需要开玩笑There's no need to be facetious.我不是故意开玩笑的I didn't mean to be facetious.还有你那碎嘴别出去跟人乱讲And don't go blabbering your little wet mouth about this. -不不会的 -我生病和别人没关系- No, no. - This is no one's business.-只是我的事 -当然了- but my own. - Of course.我认为你的艺术作品是出色的令人惊叹的I think your art is brilliant, stunning,而且非常值得投资and a wonderful investment.实际上In fact...你可以把校园弄弄吗雕塑啥的could you do the whole campus?-当然凭你的天赋 -去佛罗里达大学吗- Certainly with your talent... - To the College of Florida? 那是我的职责That's my responsibility.你不用担心You don't need to worry about that.为你最近的出轨喝一杯To your latest infidelity.还有你那光荣的绿帽子And your honorable cuckolding.这是什么Ooh, what's that?这是一颗长型白色药片It's a white oblong pill.你从哪儿弄来的Where did you get it?我们现在是有钱的中年人了We're well-to-do middle-aged wasps.想要什么药都能拿到处方亲爱的We can get prescriptions for anything we want, darling.好吧Okay.你要是表现得好If you behave yourself...我就再给你个蓝色三角的I'll give you a blue triangular one next.听说你很喜欢I heard you're quite fond of them.说正事Onto serious matters.-说吧 -你心里知道- Go for it. - And you know at heart,我一点都不在乎你和亨利的事I don't give a damn about you and Henry.你想做什么就做什么但你必须明白You do whatever you please. But you have to realize从现在开始我也会过得无拘无束that from here on out, I'll be living just as freely.在我们悲剧的婚姻中I've played a rather quiet role in我一直都是默不作声的那个the tragedy that is our marriage.还有and...老实说我受够了quite frankly, I'm done.是时候发泄一下内心最原始的欲望了It's time that we lived a bit closer to the... primal truth of it all.所以从现在开始我俩想干谁就干谁So from this point on, let us fuck who we wanna fuck.想吃什么就吃什么Let us ingest what we wanna ingest.总之只要高兴想做什么做什么And all in all, just do whatever the hell we damn well please. 好啊喝一杯Here, here.只有一个要求One request,我们都谨慎一点that we do so discretely.尽量不要伤害到Let us at least attempt to keep the parental damage我们可爱的拉拉女儿to our sweet lesbian love child to a minimum.我打从心底里同意I wholeheartedly agree.很好问题解决了Wonderful. And the matter is settled.理查德Richard?怎么了亲爱的Yes, dear?我能问一下你那家伙还能用吗Dare I ask if your equipment still works?我也不知道I don't know.很可惜它已经休眠很多年了I mean, sadly, it's laid dormant for years.如果不能用了刚好再搞个处方药治治But if it doesn't, it's just one more prescription to fill.这个敬我们的新生活Here's to, uh, our new lives.还有你重获自♥由♥And your new freedoms.现在把奖励我的蓝色药丸给我吧Now, hand over a blue one I've behaved myself admirably. 他有点像呃He was like this, um...一个爱上了自己表妹的17世纪的诗人17th century poet who fell in love with his cousin and... -爱上了自己的表妹 -我♥草♥- ...fell in love with his cousin? - Oh, shit.你真是个混♥蛋♥You're such an asshole.-怎么了 -我爸妈在家- What? - My parents are home.没关系的Hey. It's okay.你能答应我别评价吗Can you promise not to judge me?不用担心真的Don't worry, seriously.它坏掉了It's broken. Hmm.我是说整个都坏掉了I mean, the whole thing is broken.真是That's .奥莉维亚快看亲爱的Oh, Olivia. Look, dear.-奥莉维亚和她朋友来了 -这怎么了- It's Olivia andhis company. - What's going on?你妈妈把灯弄坏了Uh, your mom broke the lamp.你俩还好吗Are you all right?当然了亲爱的怎么会不好呢Yes, darling. Of course, why wouldn't we be?因为你俩看上去喝多了要不就是嗑药了Because you seem like you're drunk or on drugs.我们其实两样都来了点Admittedly, we are on a bit of both.但别让这个影响你的决定But don't let that influence your decisions.哦别听他瞎说Oh, don't listen to him.只是些处方药我是奥莉维亚的妈妈维罗妮卡They're just prescriptions. I'm Veronica, Olivia's mother. 嗨我是泰勒Hi, I'm Taylor.很高兴见到你Oh, nice to meet you...不好意思Excuse me.小心亲爱的别太激动Careful, dear. Let's not exert yourself.那她一定就是So is this... is she...妈妈泰勒就是泰勒Taylor is Taylor, mother.是啊当然是了Yes, yes, of course, you are.顺便说一下我是理查德And by the way, I'm Richard.-你要喝点吗 -当然快来- Would you like a drink? - Yes, please, come. -一起来喝一杯 -等一下不行- Join us for a drink. - No, hang on. No.你们这样太吓人了我们走了You're being very creepy. We're going.-吓人吗 -没错- Creepy? - Yes.我们只是找点乐子We're just having fun.走了Come on.嘿很高兴见到你Hey, well, it was very nice meeting you.再见很高兴认识你Bye. Nice to meet you.还不错啊That was pleasant.你觉得她俩怎么样So how do you think that went?1到10分的话On a scale of one to ten,我打4分I'd say a four.同意Agreed.我只是对自己有点失望I'm only mildly disappointed in myself.我感到有些羞愧I feel ashamed. Yeah.我们这是怎么了理查德What happened to us, Richard?我们到底怎么了What happened to us?生活Life.你知道吗就算我能回到过去You know, if I could go back in time,我也不知道应该挽回些什么I don't even know what it is I'm supposed to fix. 我能很容易想到许多事Oh, I could readily think of many things.我没问你I didn't ask you.没错True.你要把我们所有的结婚礼物都弄坏了You're gonna break all our wedding presents. 有没有注意到它们都很空洞Did you ever notice that they're all hollow?这是什么意思Ah, what does that mean?不用在意了It doesn't matter.理查德Richard?怎么了亲爱的Yes, dear?谢谢你帮我Thank you for helping me.这还用谢Of course.你吐的时候帮你拢住头发Holding your hair back has是我这辈子的荣幸之一always been one of my life's great honors.我认真的I'm serious.从某种意义上说我也是认真的In ways, so am I.你觉得奥莉维亚恨我吗Do you think Olivia hates me?恨Yes.但她也没有错But she's supposed to.我不是个坏人I'm not a bad person.我知道维罗妮卡I know you're not, Veronica.没有人说你是个坏人No one ever said you were.第二章操就要操对了你们是相对来说比较有吸引力的孩子Well, you are a... relatively attractive group of kids. 我意思是我几乎看不到有软弱的人I mean, I see a few weak chins here and there.但是我想这很可能是But, uh, I think that's probably just因为新英格兰的良好教育due to some fine New England breeding. Hmm?美丽的母亲有钱的父亲Beautiful mother, rich father,寒冷的冬天类似这些cold winter, that kind of thing.你抽烟吗Do you smoke?不No.你看着像抽烟的人You look like you do.我抽烟布朗先生I do, Mr. Brown.介意给我一支吗Would you mind if I have one?不不介意No, not at all.那么So, um...开始自我介绍吧let's go through and introduce ourselves. 谁想先来Any volunteers?那我先来我叫理查德I'll go first. My name is Richard.是你们的老师点吧I'm your professor. Go ahead.真♥他♥妈♥的不好抽That was fucking wretched.天呐Jesus.好了Okay.下一个是谁Who's next?你怎么样How about you?-我吗 -没错你- Me? - Yeah, you,打电♥话♥的女孩girl with the phone.你是谁Who are you,我们为什么要认识你why should we know you,你的人生目标是什么what do you want to do with your life?好吧Okay.我是克莱尔I'm Claire.我来自纽约州北部I'm from Upstate New York.为什么要认识我Why you should know me?我也不知道I don't know.真的我也不知道Yeah. I don't know.我猜因为我叔叔是学校的校长I guess because my uncle is the president of the school. 恶心亨利·怀特是你叔叔吗Ew. Henry Wright is your uncle?-是的 -我受不了那个二货- Yes. - I can't stand the fuck.我也不太喜欢他I don't really like him either.很高兴听你这么说That's very good to hear.我想说他真像个蜜桃冰淇淋I mean, he's so peach melba.既油腻又Just slimy and...我有主意了I've got an idea.先暂停一下这破课How about we put a little pause to this shit我们去酒吧and we go down to the bar,然后我们在那继续上and we can run over it there.我的亲生父亲是在波士顿My biological father actually met my mothers每月的堆肥会议上遇见我母亲的at a monthly compost meeting in Boston.他是个人类社会学家He's this social anthropologist over at a...很好罗丝Okay. Rose,去给大家每人再拿两扎啤酒好吗go and grab two more pitchers for everybody, would you? 为什么不直接记在你的账上Why don't you just put them in your tab?不这不是重点No, that's not the point.重点是我想要你去拿See, I want you to go and get them.而且我想要你现在就去拜托了And I want you go and get them now, please?我能要些鹰嘴豆泥吗Can I get some hummus?可以买♥♥吧Yeah, get some hummus.谢谢你Thank you.我给你们一小点建议Let me give you all a piece of advice.如果这个人有一丁存心怀孕的倾向Steer very clear of anyone who has even the faintest,躲的远远的slightest whip of intentional conception.我爸妈是故意怀上我的I was conceived intentionally.好吧我得知道你叫什么Well, I need to know your name.还有希望你们父母都告诉你们了By the way, I hope your parents all told you人总有一天会死that you fucking die at the end.你会死的你会死的You're gonna die. You're gonna die.你会死的总有一天You're gonna die. One day,即使是无忧无虑的小罗丝也会死even our blessed little Rose will die.所以我在想要是他妈的都没好好活过So, what I'm wondering is, why the fuck do we我们何苦要来这人世间走一遭sort of float through this weird thing called life without living?你知道活着You know, live.不是存在不是简单地存在Don't exist. Don't simply exist.那样太他妈无聊了要活着That's boring as fuck. Live.你懂的干些大事操地惊天动地You know. Stir some shit up. Fuck some shit up.操得对最重要的是丰富我们的生活Fuck it right. What I wanna focus on is enriching our lives.从中学到一些能受益终身的智慧And try to extract some sort of wisdom that we can carry with us.你懂得而不仅仅是爸爸妈妈的累赘You know, something other than mommy and daddy's baggage. 上帝祝福你亲爱的Ah, bless you, dear.我想对你眨眨眼可是我从来没学会You know, I'd wink at you but I never learned how.我觉得该解释一下So I just thought you should know it.还有人想要别的吗Anybody want anything else?我要能给我拿杯威士忌吗Yeah, could I get a whiskey?当然可以Oh, that's fine.她冲我放电来着She winked at me.我买♥♥了鹰嘴豆泥了I got the hummus, so...你拯救了圣诞节Christmas is saved.天呐My God.来Here we go.愿我们能永远记住每一个May we forever remember that in each and every moment,我们谱写自己生命篇章的瞬间we are composing the stories of our lives.我们要努力让它成为一个有意义的故事Let's aim to make it a meaningful read or at least,至少是个有趣的故事an interesting one, yeah?来干杯All right. Cheers.干杯Cheers.现在不介意的话Now, if you will excuse me,我要去做点出轨的事了I intend to explore a smidgen of infidelity.什么情况啊What the fuck?好了孩子们玩得开心点All right, kids. Have fun.很抱歉I'm so sorry.-只管操♥我♥ -没问题- Just fuck me. - Okay.你根本不需要做任何选择You don't have to make any choices at all.我们可以包办一切重新装♥修♥科技馆We can cover it all. We could renovate science hall.英语部再换些新椅子We could bring in a new chair to the English department. 我说那挺好的不用我吩咐了Well, I said, "Well, of course, that goes without saying." 你大学排名Surely you have better...肯定比我的要好you know, college rankings than I.闭嘴Shut up.天呐维罗妮卡那他妈的是啥Jesus, Veronica. What the hell was that?滚开Fuck off.让他们瞅着吧Let them watch.罗丝嘴巴闭上Rose, close your mouth.你那样张着嘴非常不好看It's unattractive when you gape like that.小丹尼帮我个忙Danny boy, do me a favor.吃完后结下帐Uh, close out the tab when you're done.然后那啥Yeah. And what... what...不好意思甜心你叫什么来着I'm sorry, what's your name again, sweetheart?萨拉.Sarah.别忘了给萨拉留小费Be sure and leave Sarah a healthy tip因为她是个非常非常好的人because it turns out she's a very, very nice person.我们下周再见吧I'll see you guys next week, yeah?罗丝我先拿你开刀Oh, yeah, Rose. Let me get you out of the way first.-回去好好准备一下 -但我不知道该怎么做-So be prepared. -But I don't know what to do.准备《白鲸》. Moby Dick it is.19世纪美国海洋题材小说描写了亚哈船长为了追逐并杀死白鲸莫比·迪克最终与白鲸同归于尽的故事好主意那先这样Good idea. All right.再见Have a good one.不到一分钟他就选中了女服务员He just picked up that waitress in less than a minute.到洗手间里上了她And fucked her in the bathroom.对他们俩都是成年人Yeah, well, they're both consenting adults,可以为所欲为so they can do whatever they want.干杯Cheers to that.吉布斯吉布斯看Jibbles, Jibbles, Jibbles, look.我感觉妈咪正在偷腥Look, I feel mommy is cheating.说了啥What's it say?管用了It works.我们得试着阻止他Let's go try to stop him-免得他喝个烂醉 -皮特别管了from drinking so much. Oh. Peter, come on.他自己开心就好He's having a good time.噢理查德你看起来很有精神Ah, Richard, you're looking rather sprite.我刚刚做♥爱♥没带套Oh, I just had unprotected sex.噢跟谁啊Oh, with who?狮子酒吧非常甜的那个女服务员Some very sweet girl from the Lion's Pub.嗨朵娜Hello, Donna.真恶心他没必要跟我们说那个吧Oh, that's disgusting. Why would he tell us that? 今天过得怎样啊甜心So, how was your day, sweetheart?还行Fine.那挺好Good. Fine's fine.-泰勒怎样啊 -她很好- How's Taylor? - She's fine.那就更好了That's even finer.让我们为美好的日子干杯Let us cheers to a fine day all round.二位好Hello.维罗妮卡Hmm, Veronica.坐吧Sit down.谢谢Thank you.太客气了You're so welcome.现在我们再试一次好吗Now, let's give this another shot, shall we?奥莉维亚你妈妈想跟你道歉Olivia, your mother would like to apologize.是的我很抱歉Yes, I would like to apologize...我那天的行为for my behavior the other night.我不知道为什么会作出那种反应I don't know why my reaction was so, um...不知道为什么那么的I don't know.右翼吗?右翼认为福利越多,人的依赖性就越强,进取心就越差就会鼓励懒惰,打击勤奋,从而对一个国家的前途造成消极的影响对Yes.我非常抱歉I'm really sorry.做得好Beautiful.奥莉维亚你接受妈妈的道歉吗Olivia, do you accept your mother's apology?当然Sure.那就好Well, good.事情已经解决了The matter's settled.祝大家好胃口Bon appetit.声称一次环游世界的旅行So, Ishmael claims that a journey around the world《白鲸记》里的角色在圣经旧约中是亚伯拉罕的长子这个名字已经成为孤儿流亡者和社会弃儿的象征能把你带回到起始点just brings you back to where you were before you started,这实际上来自于一个男人but this is actually coming from a man, who's lost everything他失去了过去几年里that's been his entire reality and consciousness所有的现实和意识for the past few years...我看起来气色变好了吗Do I look like I'm getting some color?不知道有点看不出来。
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2019-2020年九年级物理下册 15.1 电能表与电功学案1（新版）苏科版(I)
一、课前预习：
1．最近我们一直在学习电学知识，说到电，我们最熟悉的就是家庭用电.请回家查电费交费单，和父母讨论共同完成下列问题：供电部门是根据来收缴电费的，家里用来测量每月消耗多少电能的仪表叫；
2．预习课本P2-3的内容，完成下列问题：
⑴表头符号kW·h 读作“ ____________ ”，俗称_______,是电能的计量单位.
国际单位制中，能量的基本单位是__________.
1kW·h相当于功率为_____________的用电器正常工作__________ 所消耗的电能.
（用我们熟悉的计算功的公式W=Pt容易得到W=Pt =1kW×1h=1kW·h ）注意：1kW·h （度）=l kW×1h= l000W×3600s=_______________ J
⑵电压示数220V表示电能表适用的_______________；
⑶电流示数10A（40A），10A表示电能表的______________为10A；
（40A）表示电能表的_________________ A；
⑷（电感式）表盘转动示数3000r/kW·h，指电路中用电器每消耗________电能时，电能表转盘将转动___ _转；
（电子式）表盘指示灯闪烁参数：6400imp/kW·h指每消耗__________电能时，此电能表指示灯闪烁______次；
3．电功
电流做功的过程中,伴随着电能向能量的转化,电流做了多少功,电路中就消耗了多少 ,电流所做的功叫做 .
二、新课学习
任务一：读懂电能表
例1：小明家xx年10月底与11月底电能表的示数如图所示，请计算小明家11月份消耗了多少电能（电能可用字母W表示）？若1kW·h电费为0.55元，应付多少电费？
任务二：探究影响电流做功多少的因素：
1．怎样判断电流做功的多少？
我的方法是：电灯中电流做的功越多，消耗的能就越多，电灯获得的内能也就越多，电灯就越（亮/暗），根据电灯的亮暗程度，就可以比较电流做功的多少.
2．猜想：电流做功多少可能与哪些因素有关？ ______________________________；
3．实验时应当采用什么研究方法？__________ ___________；
4．设计实验电路图并进行讨论，说出你设计的目的.
5．按照自己设计的电路图进行实验，连接电路时，开关应该（断开/闭合），滑动变阻器的滑片位于位置，请将实验结论填写在课本P4-5的空格中.
6．任务解决:电流通过用电器做功的多少与____________、___________、____________有关，如果将用电器中的电流记做I,加在用电器两端的电压为U,通电时间为t,电流对用电器所做的功为W,则有公式: __________单位:1J=1V ·A ·s
例2：已知带动小风扇的玩具电动机两端所加的电压是1.5V，通过电动机的电流是0.5A．则通电1min电流做了多少功？消耗了多少电能？
三、课堂检测
1．电能表在电路中测量的是（）
A．电流 B.电压 C.电功 D.电阻
2．小华家电能表上月底的示数和本月底的示数如图所示.则本月消耗的电能为度，若每度电的价格是0.52元，则小明家本月应交电费元.
2 1
3 8 2
上月底示数
2 1 7 8 2
本月底示数
3．电能转化成其他形式能的过程其实就是电流_________过程，日常生活中，我们常说消耗了多少电能，也可以说成是_________做了多少功.
4．在“探究影响电流做功的因素”实验中，一些同学作了以下猜想：
猜想1：电流做功可能与电压有关
猜想2：电流做功可能与电流有关
猜想3：电流做功可能与通电时间有关
下图是为了验证猜想而设计的电路；
此实验可得出的结论是
5．某位同学实验时测得灯泡中电流为0.3A ，灯泡两端电压为3V ，则通电1min 电流做了多少电功？消耗了多少电能？
四、课后巩固
1．下列物理量中，以科学家的名字“焦耳”作为单位的是( ) A ．时间 B ．密度 C ．电阻 D ．电功
2．某用户的电能表在3月底抄表时的示数为_____________，到4月底抄表时的示数为____________，则该用户4月份用电为 （ ）
A ．352.9kW ·h
B ．268.7 kW ·h
C ．84.2 kW ·h
D ．84.2 J 3．小明家中的电能表5月初的示数如图所示，5月份交了
48.4元的电费，若每度电的价格是0.8元，则小明家月底
电能表的示数应为 根据电能表的铭牌，你还能读到哪些信息？请写出其中的两条：
（1） ；
（2） . 4.某日光灯接在照明电路中正常工作时，其电流是0．13A ，若通电10min ，有 J 的电能转化成了热能和 能.
5． 一个电热器接在家庭电路中，每分钟消耗4.62×103
J 的电能，这时流过电热器的电流有多大？
应用升华：.一电能表的表盘上标有“1200 r/（KWh ）”，将某用电器单独接在该表上，当用电器工作
V － 3 15
+ - V － 3 15
0 2 6 8 7 0 3 5 2 9 220V 10A 50Hz 0 0 1 8 5 KW ·h 3000imp/kW ·h
NO.1866711
4min后，电能表转盘转过了60r，若该用电器的电压为220V，求4min钟内该用电器消耗了多少电能？通过该用电器的电流是多少？
五、课后反思
____________________________________ ___)38333 95BD 閽25384 6328 挨J23960 5D98 嶘35485 8A9D 誝`27979 6D4B 测g:21812 5534 唴32806 8026 耦20388 4FA4 侤39588 9AA4 骤。