Volcanoes+and+Earthquakes

** Enduring Understanding **

 * ==The earth is layered with a partly molten, metallic core; a mantle that though solid, is hot enough to flow; and a colder, rigid lithosphere.==
 * ==Lithospheric plates on the scales of continents and oceans constantly move.==
 * ==Major geological events, such as earthquakes, volcanic eruptions, and mountain building, result from these plate motions.==
 * ==Some changes in the earth’s surface are abrupt (such as earthquakes and volcanic eruptions) while other changes happen very slowly (such as uplift and wearing down of mountains).==

Earthquake, fault, focus, P-wave, S-wave, Surface wave, epicenter, Richter Scale, magnitude, volcano, magma, lava, Ring of Fire, hot spot
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