Causes of global warming
- Created by: Emily903
- Created on: 16-04-16 13:09
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- Causes of Global warming
- Greenhouse effect
- Caused by humans
- Burning fossil fuels produced carbon dioxide
- This produces a barrier in the atmosphere so the heat of the sun can get through but it it prevented from getting out
- Natural climate change
- Others say the Earth's climate has always been changing
- Over the last 100,000 years the warmest periods have been when humans produced large amounts of carbon dioxide
- If previous scientists were true the atmosphere would of heated up a lot more by now
- Nature produces more carbon dioxide than humans
- Solar activity
- Changes in the Earth's temperature is due to radiation from the sun
- Sun's rays are kept from the Earth by clouds but when solar activity is high, fewer clouds are formed
- More of the sun's rays will reach Earth and so it heats up
- Global warming is not caused by carbon emissions as the Earth grew cooler after WW2 when carbon emissions levels rose
- Greenhouse effect
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