Author:
Evaluation:
Published: 11.10.2010.
Language: English
Level: Secondary school
Literature: 3 units
References: Not used
  • Presentations 'Earthquakes', 1.
  • Presentations 'Earthquakes', 2.
  • Presentations 'Earthquakes', 3.
  • Presentations 'Earthquakes', 4.
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Table of contents
Nr. Chapter  Page.
  Earthquakes   
  Causes of earthquakes   
  Measuring earthquakes   
  Earthquakes regions   
  World's bigest earthquakes   
  Earthquakes in Latvia   
  Earthquake: Consequences   
  Can Earthquakes Be Prevented?   
Extract

Earthquakes
An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves.
At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground.
An earthquake is when the ground suddenly shakes. This is caused when rocks beneath the Earth’s surface move and break.
Two reasons:
The first reason is the eruption of volcanoes, which are sudden, and as is known volcanoes are seat of inner disturbance and can effect the plates which is the second cause of earthquakes.
Earthquakes are caused due to disturbance in the movement of plates, which again can be caused due to various reasons like under crust waves or cracks in the plates.…

Author's comment
Atlants