( P2) Global warming

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  • Created by: Anjelala
  • Created on: 19-05-13 19:13
What sort of wavelengths of electromagnetic radiation can pass through the earth's atmosphere?
Most wavelengths of electromagnetic radiation can pass through the earth's atmosphere.
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What sort of radiation can pass through the earth's atmosphere?
Infrared radiation can't pass through the earth's atmosphere because it is absorbed
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What are the 5 reasons that cause carbon dioxide to occur naturally in the atmosphere?
1) Natural forest fires 2)Volcanic eruptions 3)decay of dead plant and animal matter.4) Respiration
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What are the 4 reasons of man made carbon dioxide?
1)Burning fossil fuels 2)Cement manufacture 3) Waste incineration 4) Deforestation.
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What is the most significant greenhouse gas?
>Water vapour.
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Why is water vapour the most significant greenhouse gas?
Because half of the greenhouse effect is due to water vapour and a further quarter is due to clouds.
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How much water vapour occurs naturally?
Almost half of the water vapour occurs naturally
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.How much water vapour comes from human activity?
0.001% of water vapour comes from human activity.
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When is methane produced?
Methane is produced when organic matter decomposes in an environment lacking oxygen.
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What are some natural sources of methane?
> Wetlands >Termites > Oceans
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What are some man-made sources of methane?
> mining >Burning fossil fuels >digestive processes in animals such as cattle >rice paddies >Burying of waste in landfills
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Briefly describe the sun's electromagnetic radiation...
It is relatively short
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Explain what happens to the electromagnetic radiation from the sun...
>It is absorbed by the Earth and warms our planet >The earth re radiates the energy as infrared radiation with a longer wavelength. >The longer wavelength is absorbed by greenhouse gases , this warms the atmosphere.
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Explain what is meant by dust warms..
Smoke from the factories reflects radiation from the town back to earth. This makes the temperature rise.
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Explain what is meant by dust cools...
Ash cloud from a volcano reflects radiation from the sun back into space. This makes the temperature fall.
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How has the temperature of the earth changed over the past 200 years?
The temperature of the earth has increased slowly over the past 200 years.
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What do most scientists think about climate change?
Most agree that evidence supports climate change.
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What do scientists not agree on?
> They dont agree on the extent to which human ativity has contributed to climate change.
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Other cards in this set

Card 2

Front

What sort of radiation can pass through the earth's atmosphere?

Back

Infrared radiation can't pass through the earth's atmosphere because it is absorbed

Card 3

Front

What are the 5 reasons that cause carbon dioxide to occur naturally in the atmosphere?

Back

Preview of the front of card 3

Card 4

Front

What are the 4 reasons of man made carbon dioxide?

Back

Preview of the front of card 4

Card 5

Front

What is the most significant greenhouse gas?

Back

Preview of the front of card 5
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