GLOBAL WARMING &
GREEN HOUSE EFFECT
The overwhelming majority of scientists now agree that our globe is
undergoing major climate change. They also agree that the level of carbon
dioxide in the atmosphere is rising at a terrifying rate.
We can see from satellite images that the ice caps are melting faster, our
sea levels are rising, and weather patterns are changing. We are
experiencing more water shortages and we will see hurricanes, typhoons
and cyclones increasing in ferocity and frequency. The deserts will expand
and the world will ultimately have difficulty growing enough food. Without
doubt, we have to change the way we live.
One of the contributions to Global Warming is the ‘green house effect’
which causes warming of the Earth's atmosphere and warming of the
Earth's surface as a result of atmospheric pollution by gases.
ENVIRONMENTAL SERVICES 1 CONSUMER EDUCATION TEAM
PLEASE FIND ANSWERS TO THE FOLLOWING QUESTIONS:
What are the ‘Greenhouse gases’ that cause this effect on the earth?
Where do these gases come from?
What is ‘global warming’ and how does it effect the planet and us?
Why should populations who live below sea level be very concerned about
What is the ‘Ozone layer’ and why is it important?
How do Chlorofluorocarbons affect the
What is meant by ‘climate change’?
Why should we be worried about polar bears
and other arctic animals?
Why are the tropical rainforests important – how can trees be the ‘lungs
of the world’?
What does ‘deforestation’ mean and what are the
What are the solutions to reduce this effect on the
Draw a diagram to show how the Greenhouse effect works.
ENVIRONMENTAL SERVICES 2 CONSUMER EDUCATION TEAM
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Chlorofluorocarbons (CFC) are compounds that contain chlorine, fluorine and carbon only, that is they contain no
hydrogen. They w ere formerly used w idely in industry, for example in refrigerators, aerosols, rocket engines and
some cleaning fluids. Their use has been regularly prohibited because of chemical effects on the ozone layer. They
are also a pow erful greenhouse gas.
The CFC problem:
1. CFC’s are released and rise to the stratosphere;
2. Sunlight breaks dow n the CFC’s releasing chlorine;
3. Chlorine destroys the ozone;
4. Increased sunlight reach the Earth’s surface,
raising the risk of skin cancer and other dangerous
Ozone levels, over the Northern Hemisphere, have
been dropping by 4% per decade. Over approximately
5% of the Earth’s surface, around the north and south
poles, much larger (but seasonal) declines have been
seen, these are the holes in the ozone layer.
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HOW THE RAIN FOREST SHOULD LOOK
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