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Chemistry > Greenhouse effect > Flashcards

Greenhouse effect Flashcards

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1
Q

Greenhouse effect

A

Trapping of heat in the atmosphere

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2
Q

What is the greenhouse effect?

A

Short wavelength sunlight penetrates the atmosphere to warm the Earth’s surface which absorbs some of the energy and reflects back radiation of a longer wavelength. This infrared radiation is absorbed by greenhouse gases, water and CO2, and reradiated back to Earth.

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3
Q

Global warming

A

The gradual increase in planet wide temperature

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4
Q

Main greenhouse gases

A

Methane (CH4), water vapor (H2O), carbon dioxide (CO2), dinitrogen monoxide (N20), ozone (O3), and chlorofluorocarbons, (CFCs)

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5
Q

Source, Volume, effectiveness, contribution to global warming and atmospheric life of H2O

A

Evaporation from bodies of water, product of hydrocarbon combustion

0-4% Volume

.1 relative effectiveness

No contribution/NA on life

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6
Q

Source, Volume, effectiveness, contribution to global warming and atmospheric life of CO2

A

Combustion of fossil fuels, forest fires, decay of plants and animals

.037%

1 relative effectiveness

50-60% contribution to global warming

200-500 years of atmospheric life

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7
Q

Source, Volume, effectiveness, contribution to global warming and atmospheric life of CH4

A

Anaerobic decomposition of organic matter; from animals and plants

.00017%

30 relative effectiveness

15-18% contribution to global warming

7-10 years of atmospheric life

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8
Q

Source, Volume, effectiveness, contribution to global warming and atmospheric life of N20

A

Bacterial action; use of nitrogen based fertilizers

.00003%

160 relative effectiveness

6% contribution to global warming

120-150 years of atmospheric life

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9
Q

Source, Volume, effectiveness, contribution to global warming and atmospheric life of 03

A

Photochemical smog

.000004%

2000 relative effectiveness

12% contribution to global warming

NA atmospheric life

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10
Q

Source, Volume, effectiveness, contribution to global warming and atmospheric life of CFCs

A

Spray can propellants, old fridges and ACs

.0000002%

10,000-25,000 relative effectiveness

8-14% contribution to global warming

80 years of atmospheric life

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11
Q

Effects of global warming

A

Increase in temperature, increase in precipitation, rise in sea levels

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Chemistry (11 decks)

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