英语演讲 PPT 噪声污染
四.噪声的危害和控制 课件 大赛获奖精美课件PPT
（二）噪声的危害：
1.心理影响：使人烦躁，精力不集中，妨碍睡眠和休息。 2.生理影响：使人耳聋，头痛，消化不良，视觉模糊，严重的神志不清、 休克或死亡。 3.高强度的噪声能够损坏建筑物。
三、怎样控制噪声
三.控制噪声 1.防止噪声产生----在声源处控制 在声源处安装消声器、禁止鸣喇叭.
汽车消声器
8.下列不属于噪声污染的是( B )
A.燃放鞭炮的噼啪声
B.发电厂烟囱冒出的黑烟 C.飞机引擎声 D.指甲在钢板上划过的声音
9.以下减弱噪声的措施中属于在传播过程
中减弱的是( B )
A.建筑工地上噪声大的工作要限时 B.市区种草植树 C.戴防止噪声的耳塞 D.市区内汽车禁止鸣喇叭
10.从物理学角度看,下列声音不属于噪声 是( D ) A.汽车喇叭的鸣叫声
禁止鸣笛标志
枪管消声器
近年来，随着机动车辆的迅猛增加，交通噪声污染已成为 城市噪声污染的主要因素之一。肃州区交警大队自7月1 日起，在老城区四大街等车流量较大的路段设置了禁止车 辆鸣号警示牌，加大了管理力度，有效遏制了机动车辆肆 意鸣号的不文明交通行为，收到了良好的效果。
针对这种现象,请你提出一个解决的办法.
侧设有3～4米的透明板墙,安装这些板墙
是为了( D ) A.保护车辆安全行驶
B.阻止车辆排放的废气
C.体现高架桥的设计的美观 D.阻挡车辆产生的噪声,减弱噪声污染
8.汽车的发动机在排气时会发出很大的响
声,产生噪声污染,我们平时听到汽车发出的
声音很小,这是因为安装了消声设备,如果让 你设计消声器,原理是怎样的呢？
吆喝叫卖声。
请同学阅读43页噪声的来源，并讨论下面的问题： • 1.找出噪声等级是按什么划分的？0dB的意思是什么？ • 2.不同等级的噪声对人们产生的危害是怎么样的？
英语演讲环境保护英语PPT
Environment Protection
1、Intruduce
To develop the economy, but also protect the environment, which can balance the two? It can be said that there exist the contradictions is not only a short-term problem also a long-term problem.On one hand ,human must develop the economic,but the economic development is limited by the environmental protection on the other hand when people pay more and more attention to it. We must look at the issue dialectically.
After 60 years, the stone statue of Germany has been thoroughly damaged by acid rain.
Question 3 ——Greenhouse effect
There is no doubt that global warming is very serious consequences, such as glaciers melt, sea level rise, desertification, to the ecological system and the serious impact on agricultural production.
环保演讲英语ppt
环保演讲英语ppt环保演讲英语p ptdeve lopment.有些人认为经济发展不应该在环境为代价。
他们认为目前的严重的环境问题在很大程度上是造成快速?经济发展。
例如,土地资源正在收缩因为产业发展和扩展的城市。
沙漠是传播因为过度放牧,可怜的耕作、树切割、、剥去挖掘。
我们的空气和水的供应是被污染有毒废物。
它是很重要的,因此,我们应该再看我们的工业和城市发展。
dear h eadmaste rs,teahe rs,lassm ates and friends:i’m ver proud t hat i ha ve hosen to spea k to ouall toda, i’m abit ner vous asi’ve nev er madea speehbefore t o so man people,so plea se forgi ve me if it shos. as e a ll kno,t he envir onmemt a round us is gett ing orse and ors e .in so me plaes e an’tsee fish simming in theriver or trees o n the hi lls. som e people even ha ve no le an aterto drink. so i t hink e m ust do s omething to prot et the e nvironme nt. .but hat ane do? ho to prot et our e nvironme mt? forexample,e an go to shoo l on foo t or b b ike . ean use s hoppingbasskets not pla sti bags .hen ego shopp ing ande an use both si des of t he paper hen e r ite .ina ord ,i f everon e pas mo re atten tion toour envi ronment,there i ll be l ess poll ution an d our li fe ill b e better.“thereis onl o ne earth”,i hope everone ill pro tet ourenvironm ent ell. thanks!亲爱的校长、老师、同学和朋友:今天，我很自豪的是,我已经选择与你说话，我有一点紧张, 我从来没有在这么多人面前讲话，就请原谅我是否会表现出来的。
环境污染英语演讲(课堂PPT)
of species.
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Rainforest is the lung of the earth
This is the distribution of the rainforest onEarth
There are three main reinforest on Earth:one is in Africa, another one is in Southeastern Asion and the last one is in South America.
environmental pollution
保 护 地 球 ， 人 人 有 责
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The land pollution!
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But in the other hand
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The beautiful views !
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❖So what can we do
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Everybody Can Help The Environment
噪音污染的初中英语作文
噪音污染的初中英语作文Noise pollution is a major issue in modern society. Excessive noise can have a serious impact on people's physical and mental health, as well as their overall quality of life.噪音污染是现代社会的一个重大问题。
过度的噪音会严重影响人们的身体和心理健康，以及他们的整体生活质量。
From construction sites and industrial facilities to traffic and even household appliances, noise pollution can come from a variety of sources. It can disrupt sleep, increase stress, and lead to issues like hearing loss and cardiovascular problems.从建筑工地和工业设施到交通甚至家用电器，噪音污染可以来自各种来源。
它会干扰睡眠，增加压力，并导致听力损失和心血管问题等。
Furthermore, noise pollution also has a significant impact on wildlife, disrupting communication and navigation patterns, and potentially leading to population decline in certain species.此外，噪音污染也对野生动物产生重大影响，干扰它们的交流和导航模式，可能导致某些物种数量的下降。
In urban areas, noise pollution is a constant and pervasive issue. The cacophony of sounds from various sources can create a constant background of noise that can be overwhelming for residents.在城市地区，噪音污染是一个持续且普遍存在的问题。
英语演讲环境保护英语 PPT课件
If the sea level rise 66 meters many coastal areas will disappear in the bottom of the sea.
3、 What should we do
Government should stop factories from pouring waste water into the river and waste gas into the air. 2. Advocate low carbon life to reduce carbon dioxide emissions . 3.Reduce the use of disposable plastic. 4. To reduce the use of disposable tableware as that may be less demand for timber.
Forest resources is the main advantage of the resources of the human. Rapid economic development the world's forests in the larger environment is a lot of development. Forest resources to reduce the influence by many factors, but lead to reduction of forest area is the most important factor is the development of forest production of wood and forest products like paper
NoisePollution（噪音污染）
Noise Pollution(噪音污染)Noise PollutionWe know the sounds of cities are loud enough to cause great harm to people's hearing in the U.S. One person out of twenty has got some hearing loss. And all over the world the situation is getting worse and worse all the time since the noise increases with the population.With the development of machines, noise has also increased greatly in the 20th century. We live surrounded by loud planes, trucks and electric tools. TV sets and radios add up to 90 or J00 decibels, a certain unit used to measure the loudness of sound.A normal dialogue reaches 55 decibels; a plane goes to 100, and an ordinary train, reaching the station, can be twice as loud as the loudest plane. Disco music reaches about 118. At decibels the ear stops hearing sound, and pain starts. How terrible if things go on like this!噪音污染众所周知，在美国，城市巨大的噪音对人们的听力造成了极大的损害。
water and noise pollution ppt 水污染和噪音污染
DEFINITION OF POLLUTION•When HarmfulSubstances Contaminatethe Environment it isCalled Pollution.•Pollution refers to thevery bad condition ofenvironment in terms ofquantity and quality .Definition of Water PollutionThe Contamination of water with undesirable substances which make it unfit for usage is termed water Pollution.Water pollution is any chemical, physical or biologicalchange in the quality of water that has a harmful effect on any living being that drinks or uses or lives (in) it.Water Pollution•organic and inorganicindustrial wastes and affluentdischarged into rivers.Litter from land is carried bywind or rivers to oceans andbeachesLeakage of oil in sea water Causes of Water PollutionThere are lots of causes of water pollution, the major ones are:Sewage wastes and fertilizer going into dams, streams, rivers and the ocean.•some pesticides (e.g., DDT, dieldrin)•some leached components from landfillsites (municipal, industrial)•petroleum and petroleum products•PCBs, dioxins, polyaromatichydrocarbons (PAHs)•radioactive materials such asstrontium-90, cesium-137, radium-226,and uranium•metals such as lead, mercury, cadmium •warm water from cooling towers (thermal pollution) •floating debris•garbage•foamSources of Water pollutionWater PollutionThe Worlds water pollution crisis is getting worse every year. Water is the most important thing on earth, if water pollution keeps up the way it is then it will get far more worse then what it is right now.Industrial Water pollution •Industries discharge a variety of pollutants in their wastewater including heavy metals , resin pellets, organic toxins, oils, nutrients, and solids.The facilities to treat waste water are not adequate in any city in India.Effects of Water Pollution•Aquatic life gets destroyed•Diseases caused by the ingestionof water contaminated with pathogenic bacteria, viruses, or parasites include:•cholera•typhoid•schistosomiasis•dysentery and other diarrhealdiseasesWith billions of people on earth it is very hardfor there not to be any water pollution. Thepopulation is increasing every day sotherefore if we want to stop water pollutionwe need to start now before its to late.We need to stop releasing deadly toxins into thewater and we have to find other places to putour sewage into. We also need water treatmentplants to recycle all the water so there will beless risk of disease, and there wouldn’t be somuch sewage.•Over 1 billion people lack access to safe water supplies, while 2.6 billion people •lack adequate sanitation. This has led to widespread microbial contamination of drinking water.•Water-associated infectious diseases claim up to 3.2 million lives each year, approximately 6% of all deaths globally.Remedial measures •Locate the point sources of pollution. •Work against acid rain.•Educate your community.•Ensure sustainable sewage treatment. •Watch out for toxins.•Be careful what you throw away. •Use water efficiently.•Prevent pollution .•Think globally, act locally.How to Avoid Water Pollution •Rivers should not be used for washing clothes or bathing animals in.•Harvesting of Rainwater to meet water requirements.•Dams &embankments must be created.•The rivers must not be contaminated.•In sacred river like Ganga the dead bodies shouldn’t thrown.•The word noise comes from the Latin word•Nausea meaning “ seasickness “•Or from a derivative of Latin word noxia or noceo = “ I do harm “ referring originally•To nuisance noise•Noise can be simply defined as unwanted sound.•The sound is pleasant or not depends upon its loudness,duration,rhythm and the mood of the person.•Noise pollution not only results in irritation and anger.•Noise Pollution, adverse effects of noise in our living and working environment.•Noise is, by definition, unwanted sound. It may be annoying,•interfere with speech communication,•leisure, or relaxation,•at very high levels which may occur at work or during certain noisy leisure activities, it may result in hearing loss by causing damage to the hair-cells in the cochlea in the inner ear. Noise is more often a major problem in terms of quality of human life in specific localities.Road Traffic NOISE IN THE COMMUNITYAircraft Construction Social Noise Railways A common form of noise pollution is from Transportation, principally motor vehicles SOURCES OF NOISEOutdoor sources▪Traffic (road, rail and air)▪Generator sets ▪Industries ▪Fire-crackers ▪Loudspeakers and Public Address Systems ▪Construction Activities ▪Vehicle horns Indoor sources▪Air coolers ▪Air conditioners ▪Television, music systems ▪Other office & home appliances etc.INDUSTRIES Problem is faced mainly in mixed zones or where other use zones are very near to the industrial zone. in addition, noiseis of concern within the industries also.•TRAFFIC NOISERoad Traffic:▪Major concern in our country.▪Increasing vehicle population▪Planners lack of concern at the time of planning for residential areas and other use zones vis-à-vis roads▪Lack of driving discipline▪Indiscriminate use of horns.Air Traffic :▪Air traffic is increasing at the rate of about 25% in our country and is expected to cause major concern of noise pollution in coming years.Rail Traffic:▪Is of concern where trains passes by residential and other sensitive areas.•LOUD SPEAKERS / PUBLIC ADDRESS SYSTEMSUse of loud speakers / public address systems in functions, meetings, religious places in open areas is a source of serious nuisance.•FIRECRACKERSUse of firecrackers with high noise level may harm the human hearing system. specially sensitive are small children.•CONSTRUCTION ACTIVITIESNoise from construction of roads, buildings etc. near residential and silence zones needs to be controlled by effective starategies.Understanding noise levels..•Noise is measured as a sound level , in dB = 1/10 of a bel•Named after Alexander Graham Bell •Threshold of hearing is 0 dB •Sound of rocket launching is 180dB•Human ear tolerates up to 120dB•Noise Levels Sound intensities are measured in decibels (dB). For example, the intensity at the threshold of hearing is 0 dB, the intensity of whispering is typically about 10 dB, and the intensity of rustling leaves reaches almost 20 dB. Sound intensities are arranged on a logarithmic scale, which means that an increase of 10 dB corresponds to an increase in intensity by a factor of 10. Thus, rustling leaves are about 10 times louder than whispering.Why Noise is DangerousFor most people:•A life time’s continuous exposure to 70dB:No hearing impairment•More than 8 hrs/day in excess of 85dB: Potentially hazardous (likely to induce permanent hearing loss after several years)•8 hrs/day ~90dB: Hearing temporarily impaired•Levels above 90dB: Frequent exposure is potentially hazardousProlonged exposure to high decibel levels can lead to:•Impairment of hearing•Nervous and sleep disorders•Work disruption•Increases blood pressure•Negative cardiovascular effects•Increases breathing rate•Indigestion & stomach ulcersEffects of Noise Pollution•Hearing Loss•High Blood Pressure•Stress•Sleep Disturbance•Colour BlindnessAt very high levels which may occur at work or during certain noisy leisure activities, it may result in hearing loss by causing damage to the hair-cells in the cochlea in the inner ear.Rather than leading to significant adverse physiological responses.How to Avoid Noise Pollution •The Government should ensure the newmachines that Should be noise proof.•Air ports must be away from residential area.•The Sound horn symbol is to be in School Roads.Prevention of Noise Pollution•Pleasant Home•Bhagavan Baba says “Silence is God”.•We need to talk sweetly to others.•Talk Less Work More.•Sound affects our ears so loud noise should be avoided.LEGISLATIONS ON NOISE CONTROL IN INDIARULES & LAWS1.Environmental (Protection) Act, 19862.Air (Prevention & Control of Pollution) Act, 19813.Factories Act, 19484.Motor Vehicles Act, 19885.Indian Penal Code –Sections 268, 290 & 2916.Criminal Procedure Code –Section 133w of Torts8.Local Acts/Rules regulating loud speakers etc.2 (c)‘Authority’ -includes District Magistrate, Police Commissioner, or any other officer not below the rank of Deputy Superintendent of Police 3Ambient Noise Standards, prescribed in schedule.5.Public address systemI)Written permission required from authority ii)Not to be used between 10:00 pm –6:00 am iii)Use permitted between 10.00 pm to 12.00 midnight for 15 days during cultural or religious festivals in a calendar year7.Public complaint I)If noise level exceeds the ambient noise standards by 10dB(A),complaint to the authorityii)Authority to take action 8.Power to prohibit –by Prescribed authorityNOISE POLLUTION (REGULATION & CONTROL) RULES, 2000(Notified under EPA, 1986)AIR (PREVENTION & CONTROL OF POLLUTION) ACT, 1981•Noise was included in the definition of air pollutant in the Air(Prevention&Control of Pollution)Act by an amendmentin1987.Ambient noise standards have been notified underAir Act,in1990.•This Act covers noise from industries/trade.•Implementing agency-SPCBsMOTOR VEHICLES ACT, 1988.•Sections119and120of the Central Motor Vehicle Rules,1989,deals with reduction of noise from motor vehicle.•Section119states that‘every motor vehicles shall befitted with an electric horn or other device approved by BIS’.•Section120requires that every motor vehicle shall be fittedwith a device(silencer)which reduces the noise that would otherwise made by escape of exhaust gases from the engine.It also specifies that every motor vehicle shall be so constructed and maintained as to conform to the noise standards for motor vehicles.FACTORIES ACT, 1948The Factories Act does not contain any specific provision for noise pollution control. However, in third Schedule under Section s89 and 90of the Act, ‘noise induced hearing loss’ is mentioned as a notifiable disease.Under Section89of the Act,any medical practitioner who detects any notifiable disease,including noise induced hearing loss,in a worker,has to report the case to the Chief Inspector of Factories, along with all other relevant information.Failure to do so is a punishable offence.Noise limits for work zone area have been prescribed in Model Rules framed under the Factories Act,1948.NOISE LIMITS FOR FIRE-CRACKERSGSR 682(E), October 5, 1999.▪THE MANUFACTURE,SALE OR USE OF FIRE-CRACKERS GENERATING NOISE LEVEL EXCEEDING125dB(AI)OR145dB(C)PK AT4METERS DISTANCE FROM THE POINT OF BURSTING,SHALL BE PROHIBITED.▪FOR INDIVIDUAL FIRE-CRACKER CONSTITUTING THE SERIES(JOINED FIRE-CRACKERS)THE ABOVE MENTIONED LIMIT BE REDUCED BY5LOG 10(N)dB,WHERE N=NUMBER OF CRACKERS JOINED TOGETHER.These shall be applicable at the manufacturing stage.Petroleum and Explosive Safety Organization(formerly Dept.of Explosives)is the implementing agency.LET US MAKE EARTH BETTER PLACE TO LIVE。
环境保护空气污染英语演讲PPT
The Air Pollution
Save earth,save us!
Power team
The member of our team:
1. Yuting 2. Yulan 3. Li jingbin 4. Liulu 5.You shuanghai
"We died!"
ห้องสมุดไป่ตู้
• Human beings discharge poisonous gas in the air. Many plants died!
• We will lose our plants!
The photo was took in place after Xingzhi dormitory.
Pollution Matter
•SO2 NH3 SO3 •N2O NO2 NO •Cl2 Hydrocarbon
The birds say: we need clear air to fly.
The rain say: we need transparent skin.
The kinds of air pollution
A green earth, a green life!
Everyone do a little efficient action, we will change our planet!
we have a only planet!
Life with trees
Life with flower
Life with lake
Thanks to Mr. Luke give us the knowledge
噪音污染 英语作文
噪音污染英语作文Noise Pollution。
Noise pollution is a growing problem in today's world. With the increasing population and urbanization, the level of noise pollution has also risen significantly. This has led to a number of negative effects on both the environment and human health.Firstly, noise pollution can have a detrimental impact on human health. Prolonged exposure to high levels of noise can lead to a number of health issues such as stress, anxiety, sleep disturbances, and even hearing loss. It can also have a negative impact on cognitive functions, leading to decreased productivity and performance. In addition, noise pollution can also lead to an increase in blood pressure and heart diseases, further contributing to the decline in overall health.Furthermore, noise pollution can also have a negativeimpact on the environment. It can disrupt the natural habitat of wildlife, leading to a decrease in their population and biodiversity. It can also interfere with the natural processes of ecosystems, leading to imbalances and disruptions in the food chain. In addition, noise pollution can also contribute to air and water pollution, as it can disrupt the natural processes of these ecosystems.In order to address the issue of noise pollution, it is important for both individuals and governments to take action. Individuals can take steps to reduce their own contribution to noise pollution by using quieter equipment and machinery, reducing the use of loud music and other sources of noise, and being mindful of their noise levels in public spaces. Governments can also take action by implementing and enforcing noise regulations, investing in noise-reducing infrastructure, and promoting public awareness and education on the issue.In conclusion, noise pollution is a growing problemthat has a number of negative effects on both human health and the environment. It is important for both individualsand governments to take action in order to address this issue and reduce the level of noise pollution in our world. By taking steps to reduce our contribution to noise pollution, we can help to create a healthier and more peaceful environment for ourselves and future generations.。
城市噪声污染 物理性污染介绍ppt模板
The Pollution of Noise in City
城市噪声分类
交通噪声 建筑施工噪声 社会生活噪声 工业噪声
主要是机动车辆、飞机、火车和轮船的噪声。这些噪声的噪声源是流动的，影响面较广。 主要是城市内建筑施工现场的噪声。 包括群众集会、文娱宣传活动、人声喧闹、家用电器（如收音机、电视机、洗衣机、空调机）等所产生的噪 主要是工厂车间动力机械设备等辐射的噪声。 城市交通干线的噪声的等效A声级可达 建筑施工虽然对某一地点来说是暂时性的，但对于整个城市和对基建工人来说，却是经常性的。打桩机、推 65～75分贝，汽车鸣笛较多的地方 A声级甚至在 80)分贝以上。汽车噪 声。 电子工业和轻工业的噪声约在 90分贝以下，机械工业的噪声为 80～120分贝 (见机械噪声 。 声主要是发动机、冷却风扇、进气和排气系统运转时产生的噪声、车体振动、刹车时产生的噪声以及车轮滚 土机、混凝土搅拌机、运料车等的噪声 A声级都在90分贝以上。 在国外，唱片舞会的地方是最吵闹的场所。这类噪声分布的范围较广，影响也较大。 工厂噪声不仅给生产工人带来危害，造成职业性耳聋和其他疾病，而且干扰附近居民，设在居民区内的工厂 动时轮胎与路面之间所形成的噪声。 干扰尤为突出。
1类
2类
3类
4类
谢谢观看
Group Members
Thanks for your Attention
0类：适用于疗养区、高级别墅区、高级宾馆区等特别需要安静的区域 于两旁住宅地面； 1类：适用于以居住、文教机关为主的区域。乡村居住环境可参照执行该类标准。 • 研制低噪声的飞机。此外，制定合理的城市规划和城市噪声管制法令也是非常重要的。 2类：适用于居住、商业、工业混杂区。 3类：适用于工业区。 4类：适用于城市中的道路交通干线道路两侧区域，穿越城区的内河航道两侧区域。
Noise Pollution 噪音污染
Noise Pollution 噪音污染Noise is among the most pervasive pollutants today. Noise from road traffic, jet planes, jet skis, garbage trucks, construction equipment, manufacturing processes, lawn mowers, leaf blowers, and boom boxes, to name a few, are among the audible litter that are routinely broadcast into the air.Noise negatively affects human health and well-being. Problems related to noise include hearing loss, stress, high blood pressure, sleep loss, distraction and lost productivity, and a general reduction in the quality of life and opportunities for tranquillity.We experience noise in a number of ways. On some occasions, we can be both the cause and the victim of noise, such as when we are operating noisy appliances or equipment. There are also instances when we experience noise generated by others just as people experience second-hand smoke. While in both instances, noises are equally damaging, second-hand noise is more troubling because it has negative impacts on us but is put into the environment by others, without our consent.Noise pollution is not easily defined. Part of the difficulty lies in the fact that in some ways it is different from other forms of pollution. Noise is transient; once the pollution stops, the environment is free of it. This is not the case for chemicals, sewage, and other pollutants introduced into the air, soil, or water.The definition of noise itself is highly subjective. To some people the roar of an engine is satisfying or thrilling; to others it is an annoyance. Loud music may be enjoyable or a torment, depending on the listener and the circumstances. Broadly speaking, any form of unwelcome sound is noise pollution, whether it is the roar of a jet plane overhead or the sound of a barking dog a block away.The actual loudness of a sound is only one component of the effect it has on human beings. Other factors that have to be considered are the time and place, the duration, the source of the sound, and whether the listener has any control over it. Most people would not be bothered by the sound of a 21-gun salute on a special occasion. On the other hand, the thump-thump of a neighbour's music at 2 a.m., even if barely audible, could be a major source of stress.The decibel (dB) (分贝) is a measure of sound intensity; that is, the magnitude of the fluctuations in air pressure caused by sound waves. In fact, an increase of just 3 dB means twice as much sound, and an increaseof 10 dB means ten times as much sound.A sound pressure level of 0 dB represents the threshold of hearing in the most sensitive frequency range of a young, healthy ear, while the thresholds of tickling or painful sensations in the ear occur at about 120 to 130 dB. There is fairly consistent evidence that prolonged exposure to noise levels at or above 80 dB can cause deafness. The amount of deafness depends upon the degree of exposure.Noise can cause annoyance and frustration as a result of interference, interruption and distraction. Exposure to noise is also associated with a range of possible physical effects including: colds, changes in blood pressure, other cardiovascular changes, increased general medical practice attendance, problems with the digestive system and general fatigue.。