A decent presentaion on global warming the temprature slide is a video .Plays in powerpoint and wps ppt .Except powerpoint 7 if it still does not plays leave your email in comment section i will mail as soon as possible

1. Global
Warming

2. Content
• What is Global Warming
• Causes of global warming
• graphic representation of green house
• Effects of global warming
• preventation
• conclusion
• refrences

3. Global warming has become perhaps the
most complicated issue facing world
nowadays.

4. an average increase in the
temperature of the
atmosphere near the Earth’s
surface and in the
troposphere1, which can
contribute to changes in
global climate patterns
What is Global Warming ?

5. What Causes Global Warming?
• The earth heats up (the temperature rises)=> It
happens when greenhouse gases (carbon dioxide,
water vapor, nitrous oxide, and methane) trap heat
and light from the sun in the earth’s atmosphere,
which increases the temperature. This hurts many
people, animals, and plants.

6. • One thing that causes global
warming is electrical pollution, fossil
fuels are burned to create electricity.
Fossil fuels are made of
dead plants and animals.
• Many pollutants are sent into the
airwhen fossil fuels are burned.
Some of these chemicals are called
greenhouse gasses.
Causes of the Global Warming Contd..

7. •The pollution that causes global
warming is linked to acid rain.
Acid raingradually destroys
almost everything it touches
Death of fishes in lake beacuse of acid rain

8. •Another thing that makes global
warming worse is when
people cut down trees.
Trees and other plants collect
carbon dioxide (CO2),
which is a greenhouse
gas.(deforestration)
Causes of global warming cont...
Deforstation

9. • Global warming=>
it is also destroying many huge
forests,many more fires that wipe
out whole forests.
• This happens because global
warming can make the earth very hot.
Amazon jungle after the fire

10. • Carbon dioxide is the air that our body lets out when we
breathe. With fewer trees, it is harder for people to
breathe because there is more CO2 in the air. Plants
collect the CO2 that we breathe out, and they give back
oxygen that we breathe in. With less trees and other
plants, such as algae, there is less air for us, and more
greenhouse gases are sent into the air.

11. Lets see the graph

14. What is green house effect?
• The greenhouse effect is when the temperature rises
because the sun’s heat and light is trapped in the earth’s
atmosphere.
• The heat and light can get through the atmosphere, but it
can’t get out. As a result, the temperature rises.
Sometimes the temperature can change in a way
that helps
us.

16. • The greenhouse effect makes the earth
appropriate for people to liveon
Withoutit, the earth would be freezing,
It would be freezing at night because the
sun would be down. We would not get the
sun’s heat and light to make the night
somewhat warm.
Green house Effect Cont.

17. •On the other hand it would
be burning hot . During the
day,especially during the
summer, it would be burning
because the sun would be up
with no atmosphere to filter it,
so people, plants,and animals
would be exposed to all
the light and heat.
Green house Effects Cont..

18. Makes the sea rise : the water
covers many low land
islands, the plants and causes
some of them to die so,
the animals lose a source of food,
along with theirhabitat,
but people lose two sources of food,
plant foodand animal food
What is global warming doing to
the environment?

19. Global warming, is harming and killing life in the ocean Fewer algae is
a problem because there is less food for us and many animals in the sea.

20. As Because of Global Warming the major effect
that is most hazardious to the earth is increase in
temprature

22. What are people doing to stop
global warming?
• Carpooling=>is driving with someone to a place that
you are both going to. This minimizes the amount of
greenhouse gases put into the air by a car.
• Another thing that people are doing is being more
careful about leaving things turned on like the
television, computer, and the lights.

23. • The Clean Air Act is making many
companieschange their products to
decreasethese problems. Part of the
law says that you may not put a
certain amount of pollutants in the air.
The Clean Air Act has also made car
companies change some of the things
inside of the cars. Cars pollute a lot.
While cars make more than half of the
world’s smog.

24. • Reducing cars, buses, and trucks which are also responsible
for over 50% of dangerous chemicals let into the air
• Ozone - Ozone is produced when other pollution chemicals combine.
It is the basicelement of smog.
• It causes many different kinds of health issues dealing with the lungs.
• It can damage plants and limit sight.
It can also cause a lot of property damage.

25. Conclusion
• Cutting down forest and burning fossil fuels create more CO2 in the air.
• When there are more greenhouse gases, more heat is radiated towards
Earth’s surface, this produce Global warming.
• Even global temperature changes of less than 1 degree can cause problems,
like sea level rise and changes in rainfall.
• Find solutions such as: reduce population, reduce air pollution, stop
desertification.
• The Earth is on our hand we should protect it . we are not the only one living
on earth .

26. Refrences
• http://www.who.int/globalchange/climate/en/
• http://resources.emb.gov.hk/envir-ed/text/globalissue/e issue/e_m2_2_6.htm
• http://epa.gov/c //epa.gov/climatechange/effects/index.html
• http://www.tchps.edu.hk/greenweb/gree enweb/greenMaindGMsg5
indGMsg5.htm
• http://www.ncdc.noaa.gov/oa/climate/globalwarming.ht rm