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 What is global warming?

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How Global Warming Works

Fossil fuels (coal, oil, natural gas)

Carbon Dioxide (CO2

)

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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.

Example of the

Greenhouse Effect

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 What’s the difference

between “global warming”and “climate change”?

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Difference

GLOBAL WARMING

is the increase of the

Earth’s average

surface temperaturedue 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.

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Effects of Global Warming

Increased Temperature

Habitat Damage andChanges in Water Supply

Rising Sea Level

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 What’s the proof thatglobal warming is taking

place?

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Portage Glacier 

1914 2004

• Alaska

Photos: NOAA Photo Collection and Gary Braasch – WorldViewOfGlobalWarming.org

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Colorado River 

• Arizona

June 2002 Dec 2003

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 Why is global warminghappening? 

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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

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 When did global

warming start?

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Global Atmospheric Concentration of CO2

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Temperature

(Northern Hemisphere) CO2 Concentrations

1000 Years of CO2 and

Global Warming 

Degree

CelsiusIncr e

ase

PartsPerM

illion

 Year Year  

 1000

1200

1400

1600

1800

2000 

1000

1200

1400

1600

1800

2000

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 What’s being done now to

reduce our emissions?

Solar Power  Wind Power Fuel-Efficiency 

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 We can totally stop global

warming!

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Simple Things To Do

Turn off your computer or the TVwhen you’re not using it.

Take shorter showers. Heating water uses energy.

Keep rooms cool by closing the blinds, shades, or 

curtains.

Turn off the lights when you leave a room.

Use compact fluorescent bulbs.

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Be Bulb Smart—Use CFLs

Incandescent CompactFluorescent

500 lbs.

of coal

What’s the

difference?

•1,430 lbs. CO2 pollution avoided

•$30 saved

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Simple Things To Do

Dress lightly when it’s hot instead of turning up

the air conditioning. Or use a fan.

Dress warmly when it’s cold instead of turning

up the heat.

Offer to help your parents keep the air filters on

your AC and furnace clean.

Walk short distances instead of asking for a

ride in the car.

Plant a tree. Recycle.

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