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16 Cards in this Set
- Front
- Back
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Fault |
The crack or break in earth's lithosphere along which rocks move. |
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Divergent Boundary |
A plate boundary where two plates move away from each other. |
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Convergent Boundary |
A plate boundary where two plates move toward each other. |
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Transform Boundary |
A plate boundary where two plates move past each other in opposite directions. |
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Earthquake |
Shaking that results from movement or rock beneath earth's surface. |
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Focus |
Point beneath earth's surface where rock breaks under stress and causes an earthquake. |
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Epicenter |
Point on earth's surface directly above an earthquake. |
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Richter Scale |
A scale that rates an earthquakes magnitude based on the size of the seismic waves. |
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Seismograph |
A device that records ground movements caused by seismic waves as they move through earth. |
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Aftershock |
An earthquake that occurs after a larger earthquake in the same area.
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Tsunami |
A giant wave usually caused by an earthquake beneath the ocean floor.
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Magma |
Molten mixture of rock-forming substances, gases, and water from the mantle. |
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Lava |
Liquid magma that reaches the earths surface. |
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Ring of Fire |
A major belt of volcanoes that rims the pacific ocean.
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Dormant Volcano |
Volcano that is not currently active.
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Extinct Volcano |
Volcano that is not active and unlikely to ever erupt again. |
