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18 Cards in this Set
- Front
- Back
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what is crustal stress
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the forces acting upon the earth
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when does a fracture become a fault?
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when it moves
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any opening in the earth that has released molten rock
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volcano
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vibrations produced by an eq
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seismic waves
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an ocean wave produced by an eq
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tsunami
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movements in the earths crust that occur when rocks suddenly break and release potential energy
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earthquake
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the point on the earths surface directly above the facos of an eq
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epicenter
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volcano that contains alternating layers os voolcanic debris and lava
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composite volcano
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magma that reaches the earths surface
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lava
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volcano that forms from the products of explosive eruptions
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cinder-cone volcano
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the area along a fault where rocks first break and move
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focus
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opening through which volcanic material reaches the earth's surface
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vent
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the hollow area at the top of a volcano
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crater
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true or false:
p waves cause the most damage during an eq |
false l waves do
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true or false:
the difference bywn. arrival times of p and s waves is used to determine the focus |
false it is used to determin the epicenter
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true or false:
most eq occur near plate boundaries |
true
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true or false:
the major zone of volcanic activity is found around the Pacific ocean Basin |
true
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true or false:
the rapid movement of rock and soil down a steep slope is called a creep |
false
it is a slide |
