Earthquakes are no laughing matter. They are the result of vibrations in the Earth’s outer crust. These vibrations are caused when underground rock slips. The Earth’s crust is made of large plates of rock. Over time these layers of rock slowly move causing the plates to slip against each other. These tectonic type earthquakes occur in regions where the large plates border each other – the San Andreas Fault in California is a well known fault line.
Earthquakes rock our world
Sunday, March 30, 2014
Earthquakes rock our world
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