Earthquakes - Earthquakes Jennifer Braden There are many...

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Earthquakes Jennifer Braden There are many types of tectonic plates around the world. The primary plates in the seven continents and Pacific Ocean are, African Plates, Antarctic Plate, Eurasian Plate, Indo- Australian Plate, North American Plate, Pacific Plate, and the South American Plate. According to Windows to the Universe, the plates at our planet’s surface move because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rise’s, cools, and sinks down. As the cooled material sinks down, it is warmed and rises again. Where these plates meet, you will find faults – breaks in the Earth’s crust where the blocks of rock on each side are moving in different directions. Earthquakes are much more common along fault lines than they are anywhere else on the planet. Most earthquakes are caused by the sudden movement of the stressed blocks of the Earth’s crust along the fault lines. Earthquakes are sometimes triggered by unexpected release of
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This note was uploaded on 01/13/2011 for the course GLG 101 taught by Professor Brewer during the Spring '10 term at University of Phoenix.

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Earthquakes - Earthquakes Jennifer Braden There are many...

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