Transcript What is global warming?

GLOBAL
WARMING

(n)
LECTURE OUTLINE(N)
What is(hv) global
warming(n)?
How Global Warming(n) Works(v)
Carbon Dioxide (CO2) (n)
Fossil fuels(n) (coal, oil, natural gas)
Example of the
Greenhouse Effect(n)
The Sun’s(n) energy
passes(v) through
the car’s
windshield(n).
This energy (heat)
is trapped(v) inside
the car and cannot
pass(v) back
through the
windshield(n),
causing(v) the
inside(n) of the
car(n) to warm
up(v).
Effects of Global Warming
Rising(v) Sea Level(n)
Habitat(n) Damage(v) and
Species(n) Affected(v)
Increased(adj)Temperature(n)
Changes(v) in(prep) Water
Supply(n)
WHAT’S THE(ART.) PROOF(N)
THAT GLOBAL WARMING(N)
IS TAKING(V) PLACE?
Portage Glacier(n)

Alaska
1914
2004
Colorado River(n)

Arizona
June 2002
Dec 2003
WHY IS GLOBAL(N)
WARMING HAPPENING(V)?
Burning(v) of Fossil
Fuels(n)
Pollution
Pollution(n)
fromfrom
coal,
natural
coal(n),
gas,
natural
and oil
gas(n), and oil(n)
WHEN DID GLOBAL
WARMING(N) START(V)?
Global Atmospheric Concentration(n) of
CO2(n)
How is(hv) global
warming(n) measured(v)?
1000 Years of CO2 and
Global Warming
Temperature
(Northern Hemisphere)
Year
Year
2000
1800
1600
1400
1200
1000
2000
1800
1600
1400
1200
1000
Parts Per Million
Degree Celsius Increase
CO2 Concentrations
Global Warming:
Shifting(v)
Gears(n)
What’s being done(v) now to
reduce(v) our(pn) emissions(n)?
Wind Power(n)
Solar Power(n)
Fuel-Efficiency(n)
WHAT CAN YOU(PN) DO TO
HELP(AV) SOLVE(V)
THE(ART) PROBLEM(N)?