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18 Cards in this Set
- Front
- Back
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tremor
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a quivering or vibration caused by slippage of the Earth’s crust at a fault, especially before or after a major earthquake; a slight shaking or trembling movement
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Divergent boundary
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where two plates are moving in opposite directions
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earthquake magnitude
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amount of energy earthquakes release
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seismograph
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instrument scientists use to measure the Earth’s movement
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Pangaea
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the continents all connected into one huge landmass or huge supercontinent
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foreshocks
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a slight tremor or minor earthquake, often a series of little quakes preceding a larger earthquake or volcanic eruption
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Richter Scale
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a scale from 1 to 10 used to measure the severity of earthquakes according to the amount of energy released
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Transform boundary
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where two plates are sliding past each other
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warning
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a notice; a sign that something bad is going to happen
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focus
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underground where the rocks suddenly snap past each other
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epi center
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the place on the ground just above the focus
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earthquake
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a violent shaking of the Earth’s crust, also known as a tremblor
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aftershocks
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a small earthquake, usually one of several, that follows a larger one after a period of time
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sandboils
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gushing water and soil, like a mini-mud volcano, that may happen during an earthquake; dangerous to buildings
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predict
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to state, tell about, make known in advance
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shock waves
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the energy that is generated by an earthquake and travels in the form of waves through the surrounding rocks
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fault
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cracks in the Earth’s crust in response to stress
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Convergent boundary
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where two plates collide to form mountains
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