Climate Change
- Created by: Sommerville
- Created on: 04-04-18 15:22
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- Climate Change
- evidence
- Ice cores can be drilled into Antarctica and layers of ice analysed back 400000 years to tell us past temperatures
- We are warmer today than we have ever been.
- Throughout the quaternary period (last 2.6 million years) the earth has fluctuated between cold glacials lasting 100 thousand years and warmer interglacials of 10,000 years.
- Ice cores can be drilled into Antarctica and layers of ice analysed back 400000 years to tell us past temperatures
- Causes
- Natural Causes
- orbital changes-the way the earth orbits the sun changes on cycles over thousands of years-may cause glacial and interglacial.
- Solar Output- the amount of solar output varies.
- Human Causes
- Burning fossil fuels releases CO2 from cars and factories. Human cause climate change via the greenhouse effect where the sun's energy is trapped inside the atmosphere.
- Agriculture- methane from the faeces of cattle and rice fields
- Natural Causes
- Effects
- Environmental
- Shrinking Ice Caps, rising sea levels, coastal flooding, coral bleaching and loss of biodiversity.
- People-deaths from heat, migration from coastal areas, political tension over water and farming changes causing malnutrition.
- Environmental
- evidence
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