2. CONTENT
Introduction
What is GlobalWarming?
How GlobalWarmingWorks.
Example of the Greenhouse Effect.
Difference between “global warming” and “climate change.
Effects of GlobalWarming.
Why is global warming happening?
How is GlobalWarming measured?
When did GlobalWarming started?
What can you do to help solve the problem?
Conclusion
Reference
3. INTRODUCTION
Is the world getting warmer?
If so, are the actions of mankind to blame for earth’s
temperature increases?
What can/should be done about these issues?
4. WHAT IS GLOBAL WARMING?
Global Warming is the increase of Earth's average surface temperature due to effect of
greenhouse gases,
such as carbon dioxide emissions from burning fossil fuels or from deforestation, which
trap heat that would otherwise escape from Earth.
This is a type of greenhouse effect.
5. HOW GLOBAL WARMING WORKS
Fossil fuels (coal, oil, natural gas)
Carbon Dioxide (CO2)
8. DIFFERENCE
GLOBAL WARMING is the increase
of the Earth’s average surface
temperature due to a build-up of
greenhouse gases in the atmosphere.
CLIMATE CHANGE is a broader
term that refers to long term
changes in climate, including average
temperature and precipitation.
9. EFFECTS OF GLOBAL WARMING
Increased Temperature
Habitat Damage and Species Affected Changes in Water Supply
Rising Sea Level
14. BURNING OF FOSSIL FUELS
Pollution from coal,
natural gas, and oil
Pollution from coal,
natural gas, and oil
Pollution from coal,
natural gas, and oil
17. WHAT IS CARBON DIOXIDE AND HOW IS IT DISCOVERED?
Joseph Black, a Scottish chemist and physician, first identified carbon dioxide in
the 1750s.At room temperatures (20-25 oC), carbon dioxide is an odorless,
colorless gas, which is faintly acidic and non-flammable. Carbon dioxide is a
molecule with the molecular formula CO2.The linear molecule consists of a
carbon atom that is doubly bonded to two oxygen atoms, O=C=O.
18. APPLICATIONS OF CARBON DIOXIDE BY HUMANS
o Humans use carbon dioxide in many different ways.The most familiar example is
its use in soft drinks and beer, to make them fizzy.
o Carbon dioxide released by baking powder or yeast makes cake batter rise. Some
fire extinguishers use carbon dioxide because it is denser than air.
o Carbon dioxide can blanket a fire, because of its heaviness.
o Carbon dioxide plays an important part in vital plant and animal process, such as
photosynthesis and respiration.
19. ENVIRONMENTAL PROBLEMS -THE GREENHOUSE EFFECT
Greenhouse gasses absorb some of the heat and trap it near the earth's surface, so
that the earth is warmed up.This process, commonly known as the greenhouse
effect.
The amount of heat in the troposphere depends on concentrations of atmospheric
greenhouse gasses and the amount of time these gasses remain in the atmosphere.
The most important greenhouse gasses are carbon dioxide, CFC's (Chlor-Fluoro-
Carbons), nitrogen oxides and methane.
20. CARBON DIOXIDE AND HEALTH
The primary health dangers of carbon dioxide are:
- Asphyxiation. Caused by the release of carbon dioxide in a confined or
unventilated area.This can lower the concentration of oxygen to a level
that is immediately dangerous for human health.
- Frostbite. Solid carbon dioxide is always below -78 oC at regular
atmospheric pressure, regardless of the air temperature. Handling this
material for more than a second or two without proper protection can
cause serious blisters, and other unwanted effects. Carbon dioxide gas
released from a steel cylinder, such as a fire extinguisher, causes similar
effects.
- Kidney damage or coma.This is caused by a disturbance in chemical
equilibrium of the carbonate buffer.When carbon dioxide concentrations
increase or decrease, causing the equilibrium to be disturbed, a life
threatening situation may occur.
24. Temperature
(Northern Hemisphere) CO2 Concentrations
1000 YEARS OF CO2 AND
GLOBAL WARMING
DegreeCelsiusIncrease
PartsPerMillion
Year Year
1000
1200
1400
1600
1800
2000
1000
1200
1400
1600
1800
2000
26. SIMPLE THINGS TO DO
o Turn off your computer or the TV when you’re not using it.
o Take shorter showers. Heating water uses energy.
o Keep rooms cool by closing the blinds, shades, or curtains.
o Turn off the lights when you leave a room.
o Use compact fluorescent bulbs.
27. SIMPLE THINGS TO DO
o Dress lightly when it’s hot instead of turning up the air conditioning. Or use a fan.
o Dress warmly when it’s cold instead of turning up the heat.
o Offer to help your parents keep the air filters on your AC and furnace clean.
o Walk short distances instead of asking for a ride in the car.
o Plant a tree.
Recycle.
28. BE BULB SMART—USE CFLS
Incandescent Compact Fluorescent
What’s the difference?
•1,430 lbs. CO2 pollution avoided
•$30 saved
29. CONCLUSION
There is very little doubt that global warming will change our climate in the next
century. So what are the solutions to global warming? First, there must be an
international political solution.
Second, funding for developing cheap and clean energy production must be increased, as
all economic development is based on increasing energy usage.
We must not pin all our hopes on global politics and clean energy technology, so we
must prepare for the worst and adapt. If implemented now, a lot of the costs and
damage that could be caused by changing climate can be mitigated.
