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Global Warming Basics
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GLOBAL WARMINGBASICS
What is global warming?
Global warming is when the earth heats up.
It happens when greenhouse gases such asIt happens when greenhouse gases such as
,water vapor,water vaporcarbon dioxidecarbon dioxide
and methaneand methane
trap heat and light from the sun in the earth’s atmosphere, which increases the temperature.
trap heat and light from the sun in the earth’s atmosphere, which increases the temperature.
,nitrous oxide,nitrous oxide
The Sun’s energy passes through the car’s windshield.
This energy (heat) is trapped inside the car and cannot pass back through the windshield, causing the inside of the car to warm up.
Greenhouse Effect
Effects of Global Warming
5. Spread of disease
As northern countries warm, disease carrying insects migrate north, bringing plague and disease with them.
As the temperature of oceans rise, so will the probability of more frequent and stronger hurricanes.
4. Warmer waters and more hurricanes
3. Increased probability and intensity of droughts and heat waves
Hurricanes and diseases cost money which affect a country’s economy
2. Economic Consequences
1. Polar ice caps melting
• Raise sea levels.
• Raise temperatures
• Affect Wildlife
Wildlife Effects
• Polar Bears– Require pack ice to live– Might eventually go extinct in the wild
• Sea turtles– Breed on the same islands as
their birth– Could go extinct on some islands
as beaches are flooded
• Other species may go extinct as rainfall patterns change throughout the world
• Polar Bears– Require pack ice to live– Might eventually go extinct in the wild
• Sea turtles– Breed on the same islands as
their birth– Could go extinct on some islands
as beaches are flooded
• Other species may go extinct as rainfall patterns change throughout the world
What’s the proof that global
warming is taking place?
Drought in Africa
Lake FaguibineLake Faguibine Lake ChadLake Chad
19142004
Portage Glacier, Alaska
June 2002
Colorado River, Arizona
Dec 2003
Why is global warming
happening?
Rapid CO2 IncreasesRapid CO2 Increases
Burning of Fossil Fuels in plants, factories, cars and houses
Methane from rice paddies both ends of animals, garbage in landfills and mining operations
Nitrous oxide from fertilizers and other chemicals
Possible Solutions to Global Warming
Mitigation of Global Warming
• Conservation– Reduce energy needs– Recycling
• Alternate energy sources– Nuclear– Wind– Geothermal– Hydroelectric– Solar– Fusion
Together we can make a big change!Together we can make a big change!
• Keep rooms cool by closing the blinds, shades, or curtains.
• Conserve electricity! DO NOT leave appliances on standby
• Conserve electricity! DO NOT leave appliances on standby
• Turn off the lights when you leave. • Turn off the lights when you leave.
• Use CFLs
IncandescentCompact
FluorescentWhat’s the difference?
•1,430 lbs. CO2
Pollution avoided
•500 lbs. of coal
•1400 Php saved•1400 Php saved
•Avoid turning up the air conditioner. Instead dress lightly or
use a fan.
•Avoid turning up the air conditioner. Instead dress lightly or
use a fan.
•Keep the air filters on your AC clean.•Keep the air filters on your AC clean.
•Walk short distances instead of asking for ride in the car.
•Walk short distances instead of asking for ride in the car.
•Plant a tree•Plant a tree •Reduce, Reuse, Recycle
•Reduce, Reuse, Recycle