全球变暖演讲稿8篇

演讲稿中的用词一定要做到严谨规范，这样才能吸引更多关注，对于演讲稿的写作一定要做到反复斟酌，以下是28范文小编精心为您推荐的全球变暖演讲稿8篇，供大家参考。

全球变暖演讲稿8篇

全球变暖演讲稿篇1

no one，regardless of race, religion or nationality, can deny that the world we live in is becoming increasingly intolerable because of the effects of global warming. according to many experts, even greater impacts are still on the way.

there are numerous causes for this problem. on one hand, human-related emissions of carbon into the atmosphere is causing, and will in the future cause, significant global warming according to the theory. on the other hand, the lack of knowledge about the importance of protecting environment hinders the solving of the problem.examda.com

it is urgent that immediate and effective actions should be taken right away. first, more trees need to be planted to help improve and beautify the environment. besides, stricter laws concerning global warming and irresponsible use of fuel resources have to be put into effect and achieved good results. in a word, there is a long way to go before we can take a comfortable world for granted again .

全球变暖演讲稿篇2

environmental protection

全球变暖演讲稿篇3

global warming the gradual increase of the temperature of the earth's lower atmosphere as a result of the increase in greenhouse gases since the industrial revolution.

the temperature of the atmosphere near the earth's surface is warmed through a natural process called the greenhouse effect. visible shortwave light comes from the sun to the earth passing unimpeded through a blanket of thermal or greenhouse gases composed largely of water vapor carbon dioxide methane nitrous oxide and ozone. infrared radiation reflects off the planet's surface toward space but does not easily pass through the thermal blanket. some of it is trapped and reflected downward keeping the planet at an average temperature suitable to life about 60°f (16°c).

growth in industry agriculture and transportation since the industrial revolution has produced additional quantities of the natural greenhouse gases plus chlorofluorocarbons and other gases augmenting the thermal blanket. it is generally accepted that this increase in the quantity of greenhouse gases is trapping more heat and increasing global temperatures making a process that has been beneficial to life potentially disruptive and harmful. during the past century the atmospheric temperature has risen 1.1°f (0.6°c) and sea level has risen several inches. some projected longer-term results of global warming include melting of polar ice with a resulting rise in sea level and coastal flooding; disruption of drinking water supplies dependent on snow melts; profound changes in agriculture due to climate change; extinction of species as ecological niches disappear; more frequent tropical storms; and an increased incidence of tropical diseases.

improved automobile mileage reforestation projects energy efficiency in construction and national support for mass transit are among relatively simpler adjustments that could significantly lower u.s. production of greenhouse gases. more aggressive adjustments include a gradual worldwide shift away from the use of fossil fuels the elimination of chlorofluorocarbons and the slowing of deforestation by restructuring the economies of developing nations. in 20__ the bush administration proposed several voluntary measures for slowing the increase in instead of reducing emissions of greenhouses gases.

全球变暖演讲稿篇4

尊敬的老师，亲爱的同学：

大家好!

到了十五六岁的年纪，我们也都清楚了环境的重要性。就像现在我们正坐在这个偌大的操场一样，如若当我们离开时，操场还会像之前一样干净的话，那么也就证明着我们每个人的卫生习惯提升了不少，所以不管是对于整个大环境还是个人的卫生习惯，我认为我们都是应该要花费一些心思的。在此，我呼吁大家和我一起执起青春的旗帜，一同维护我们的卫生，一起保护我们的社会环境。

前几天看到一则非常感动的新闻，一所学校高考完之后，外面的家长等候区0垃圾，当清洁员抵达现场的时候也震惊了，往常每次人群聚集之后就会留下一地垃圾，这次这么多家长等待子女都没有留下一点垃圾，直接感叹这一届学生家长的素质实在是太高了。看完这则新闻之后，我真的很受感动，现在时代发展的很快，其实我们人也在不断的发展中，我们的个人素质也在不断的提升，所以我们每个人也更应该去做好自己本职的那一份工作了。对于我们高中生而言，就应该在做好学习工作的同时，注重对周围环境的维护和保护。那么主要表现在哪几个方面呢?

首先就是要维护好自己身边的环境，也就是我们的校园环境，从身边做起总不会是一件错误的事情。其次就是要把视野放到更远的地方，保护森林，保护野生动物，为更多的生物创造出一个更加舒适的环境，也为我们人类自身的生存环境创造一些更好的条件出来。因此这两点是我们都可以做到的事情，而此刻，也让我们在内心更加坚定一些。肩负起这份责任，为我们这个社会，为我们自己的生存环境贡献一些力量。

在保护环境方面，我们每个人都可以是一位英雄，我们向城市的每一位环境工作者致敬，也向每一个对社会环境有巨大贡献的人致敬。在二十一世纪的今天，我们也应该把更多的目光交给环境了，我们要从长远去考虑，坚持可持续发展的原则，不管是在平时的生活，还是自己思想的提升方面，我们都应该好好去考虑这样的一件事情了。让我们拿出自己的一点力气来，去坚持做这份环保工作吧!让我们成为新时代的翩翩少年，让我们成为环保路上的引航者!

全球变暖演讲稿篇5

earth’s temperature begins with the sun. roughly 30 percent of incoming sunlight is reflected back into space by bright surfaces like clouds and ice. of the remaining 70 percent, most is absorbed by the land and ocean, and the rest is absorbed by the atmosphere. the absorbed solar energy heats our planet.

as the rocks, the air, and the seas warm, they radiate “heat” energy (thermal infrared radiation). from the surface, this energy travels into the atmosphere where much of it is absorbed by water vapor and long-lived greenhouse gases such as carbon dioxide and methane.

when they absorb the energy radiating from earth’s surface, microscopic water or greenhouse gas molecules turn into tiny heaters— like the bricks in a fireplace, they radiate heat even after the fire goes out. they radiate in all directions. the energy that radiates back toward earth heats both the lower atmosphere and the surface, enhancing the heating they get from direct sunlight.

this absorption and radiation of heat by the atmosphere—the natural greenhouse effect—is beneficial for life on earth. if there were no greenhouse effect, the earth’s average surface temperature would be a very chilly -18°c (0°f) instead of the comfortable 15°c (59°f) that it is today.

全球变暖演讲稿篇6

with the development of economy, more and more greenhouse gases are being discharged into the air. co2 makes up about 70% of the greenhouse gases, which is considered to be one of the greatest causes of global warming. it has harmful effects, causing the sea level to rise and many natural disasters to strike.

so we must take effective measures to save our planet. first, we should use more clean energy and less coal and oil. second, we should go to work on foot or by bus instead of driving a car if possible. third, we should plant more trees, because plants can turn co2 into oxygen. more importantly, we should form the habit of saving energy in our daily life.

全球变暖演讲稿篇7

people around the world may feel that the climate has been getting steadily warmer and warmer in recent years. places which used to be abundant in snowfall have frequently experienced snowfree(无雪的) winters. drought lasts longer in some dry areas. people find that without air conditioners they could hardly work or fall asleep on hotter summer days.

the side effects of global warming are alarmins. a warmer global climate melts the ice caps, raising sea levels. what is more, it disturbs weather patterns, causing droughts, severe storms, hurricanes (飓风). people suffer a lot from disasters relevant to global warming.

to stop global warming we should make immediate and continual efforts. we hope the situation will soon change. global warming catches and holds our concern, for it affects us and will affect our later generations. we cannot wait any longer. do it. do it right. do it right now.

全球变暖演讲稿篇8

亲爱的老师们、同学们：

大家好，我是来自高一(11)班的陶子寅，今天我将讨论的主题是环保。上周四是我国第37个植树节，它就是为环保而设立的节日。在我看来，环保，就是环与保，环，即循环节约;保，即保持改善。环对付的是浪费，保处理的是污染，这两项，我国的问题仍十分严重。

比如说，我国每年纸的生产量和消耗量都占全球的1/4，每年消耗约0.4亿吨纸，相当于8亿棵树，每棵树的树龄约为20年，在这20年里，因形成层细胞分裂活动快慢的周期变化，树才形成了20个年轮，最终变成50千克的纸。此外，水、电、化石燃料的消耗也很惊人。

最近的一部纪录片《穹顶之下》一定有许多人看了，也肯定有了自己的反思。那如今南京的雾霾怎么样了呢，晚上大家可以出楼眺望一下天际，泛着淡淡的红，，当然，那不是晚霞，而是霾在作怪，短波长蓝紫光能更易被大气层散射，而在晴朗天气下一般会散射到外太空中的长波红光，会因霾的存在大部分被反射回地面，因此天空呈现红色。而雾霾产生的主要原因还是化石燃料的过度燃烧。除此之外，还有许多环境问题，如垃圾过多、气候变暖、水土流失等等。

对于这些问题，我们可以做些什么呢?其实我们可以做的有很多，以下是我自己的一些建议：

1.节约用纸，每学期末，将不再用的本子的剩余空白页撕下当草稿纸，套书的书皮如不破烂，也可用于下学期的新书。

2.废物利用，平时使用后的纸包装，报刊，塑料瓶等物都堆放在一处，连同无用的课本试卷，一起送去废品回收站。

3.春节期间减少烟花爆竹的燃放，外出时劝父母尽量不开车，短距离可以步行或骑车，长距离可以选择公共交通。

4.积极参与环保活动，爱护花草树木，有机会的话自己种几棵树。

相信只要每一个人都能将环保记在心里，落实在行动上，我们的环境会更加美好。从今天开始，大家共同努力。

会计实习心得体会最新模板相关文章：