All About: The 2011 Japanese Earthquake

Earthquake Basics

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    Earthquakes happen because the rocks underneath the Earth's crust move, which make the trembling and movement of the ground. The tectonic plate are divergent, convergent, and transform boundaries. Earthquakes can strike at any location at any time. History shows they occur in the same general patterens over the years, usually in three zones on the Earth. The circum-Pacific seismic belt is where 81% of the worlds largest earthquake occur. The Alpide is where 17% of the worlds largest earthquakes occur. Thirdly, is the Mid-Atlantic Ridge, earhquakes in this zone are taken for granted, but damaging shocks are scattered in various areas of the world. Falts are also the main places earthquakes can strike. Scientists use a seismograph to record/measure earthquakes, seismographs can also help them predict earthquakes as well.