Mindmap
Occurance of Earthquakes
Mind map: occurrence of earthquakes
Inhalt der Mindmap
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
Informationen
- Beschreibung
- Leaving Cert Geography (Physical Geography) Mindmap am Occurance of Earthquakes, erstellt von Tom Cahill am 27/10/2013.
- Erstellt von
- Tom Cahill
- Aufrufe
- 78
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