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By Louise Park
|Natural disasters occur all over the world, and earthquakes are among the most frightening as they cannot be predicted. Though minor quakes happen constantly, sometimes a tremendous build up of pressure causes an enormous strain on the Earth's brittle crust, and the only way to reduce the pressure is for the crust to move, causing an earthquake. In this highly illustrated science book for upper elementary students, part of the "Natural Disasters" series, author Louise Park gives a basic explanation of the different types of earthquakes.|