Term
CONTINENTAL DRIFT
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| A theory proposed by Alfred Wegener saying that all continents used to be one, and after time drifted away |
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| A scientific theory that explains the lithosphere's motions and movements. The lithosphere broken up into tectonic plates. |
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CONVERGENT BOUNDARY
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| Where two plates meet, pushing against eachother. Depending on what type of plate they are, subduction or mountain ranges can accur. |
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DIVERGENT BOUNDARY
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| A boundary where two plates pull apart. New magma can rise up and make new land or islands. Also causes seafloor spreading. |
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TRANSFORM BOUNDARY
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| A boundary where two plates slide past eachother. One example is the San Andreas Fault Line in California. |
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SEAFLOOR SPREADING
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| As new magma comes up in divergent boundaries, the seafloor gets wider. |
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| The outermost layer of the Earth. Where we live! |
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| A layer of viscous hot rock. Contains the Asthenosphere. |
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| A layer of liquid iron and nickel. |
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| The innermost part of the Earth. It is a solid ball and is very hot. |
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| A highly viscous part of the upper mantle. Lies below the lithosphere. |
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Term
CONVECTION CURRENTS
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Definition
| The viscous rock gets heated from the Core, rises up, cools, and sinks back down. Supposedly, the currents move the tectonic plates. |
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| A sudden release of tension thats been building up on boundaries. Can vary in magnitude. |
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| The Richter Scale measures the magnitude of an earthquake ( how strong it is ) |
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| A siesmic wave. Also known as the Primary Wave. Also known as "the sound" of the earthquake. |
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| A siesmic wave. Also known as Secondary Wave and arrives after the P Wave. |
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| A siesmic wave that travels along the surface of the Earth. |
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| A massive wave ( a reaction to an earthquake ) |
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| When sand and water are struck by a violent force ( earthquake ) and start to sink, taking whatever rests on them, to the Mantle. |
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| When loose soil gets mixed with water or shaken, falling off of the surface it was on. |
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