Mind map
Occurance of Earthquakes
Mind map: occurrence of earthquakes
Map content
Occurance of Earthquakes
Plate Tectonics (Theory)
- lithosphere consists of large, rigid sections called plates
- Convection Currents - driving force
- lithosphere consists of large, rigid sections called plates
Earthquakes
- Sudden release of energy on earths surface
- vibrations or shocks
- Sudden release of energy on earths surface
Plates
- Jam or stick together
- build up of stress in rocks
- stress releases - plates slip
- seismic waves
- stress releases - plates slip
Shallow Focus (<70km)
- passive boundaries
- Pacific and N. American
- smaller magnitude than deep focus
- account for 75% of earthquakes
- passive boundaries
Deep Focus (300km)
- convergent
- heaviest plate is subducted
- Indian and Eurasian
- convergent
Information
- Description
- Leaving Cert Geography (Physical Geography) Mind Map on Occurance of Earthquakes, created by Tom Cahill on 27/10/2013.
- Created by
- Tom Cahill
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