cc whats up with global warming
TRANSCRIPT
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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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