Short Presentation on Global warming.

2. • Global warming is the temperature rising each year.
• Scientists say that the earth has warmed up about 1
degree Fahrenheit in the last 100 years.
• The rate of change is speeding up, 100 years from now
scientists say that the earth will be 10 degree hotter!

3. • Global warming is caused by CO2 and other gases such
as Methane given off by burning fuel and wood.
• These gases are called by green house gases mainly
produced by the factories and cars.
• Green house gases lets in heat, but doesn’t let the heat get
out.

4. • Some solar radiation passes through the clear
atmosphere. Most radiation is absorbed by the
earth and warm it.
• Some of the infrared radiation passes through
the atmosphere, and some is absorbed and re-
emitted in all directions by green house
molecule. The effect of this is to warm the
earth’s surface and the atmosphere.

5. • Global warming isn’t all bad, without it we could
freeze to death.
• But other than that, there’s is nothing that’s good
about global warming.

6. • If there is too much greenhouse gases the polar ice caps
would melt and flood low lying land.
• Too much global warming can also cause more forest
fires and stronger hurricanes.
• It can also become the cause of the end of the world
because, it would warm up the earth so much the earth
would blow up.

7. • Global warming is happening constantly. And it’s our
fault.
• Global warming is also happening world widely.
• A new gas called trifluoromethyl sulfur pentaflouride is
generate heat more than other known green house gases.
Although it is very rare in atmosphere.

8. All other
sources
1%
Motor
vehicles
55%
Utilities
22%

9. • We can slow down Global warming by riving hybrids,
riding bikes, and walking a little more.
• We can also help by using cleaner energy sources such as
solar power, wind power and hydro power.

10. THANKS