the pleistocene
- Created by: Charlie barker
- Created on: 26-05-13 13:52
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- the pleistocene
- roughly every 200-250 years there has been a major period of ice activity
- glaciars
- a flowwing stream of ice occupying a valley
- firn
- compacted snow that has survived a season of melting an freezing
- temperature latitude
- lie between the polar regions and the tropics
- ice sheets
- continuious mass of ice and snow of considerable thickness and are over 50000km"
- global fluctuations
- global fluctuation in temperatures up to 1 degree can cause an ice age
- sun spot acttivity and volcanic dust can also aid ice ages
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