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23 Cards in this Set
- Front
- Back
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What are the 3 major forces within the rocks of the earth
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1. compression
2. Tension 3. shearing |
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What is a normal falt
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a fault caused by tension forces on rocks
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What is a reverse faltwhat is a strike falt
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a fault caused by tension forces on rock
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what is a fracture
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a fault caused by rock sliding past each other
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what is a fracture
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a fraction is a break in the rock
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what are seismic waves
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seismic waves are earth quakes waves
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define focus
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Focse: place on the surface of the earthquake starts
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what is a seismograph
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seismograph instruments detects and mesures earthquakes
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what is the epicenter
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Epicenter place on the surface of the directly above the focus
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what are the characteristics of primary waves
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Fastes P-waves pushing together and pulling apart
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what are the characteristics of secondary waves
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second waves to be recorded
slow side to side |
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what are the characteristics of surface waves
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L-waves long waves
fast waves most damage |
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the release of stored energy when something is stretched to far is known as the
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Elastic energy
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an earthquake occurs when a sudden movement along a fault releases
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energy
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shearing forces push rock in what type of directions
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Opposite, but not directly opposite, horizontal direction.
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as a transverse wave moves through matter, the matter moves
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up and down
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force when an object pushes, pulls or presses on another object
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stress
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shaking of the ground caused by sudden movement of large blocks of rocks along a fault
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earthquake
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a break of fracture in the lithosphere
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fault
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a small earthquake following a more powerful earthquake
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aftershock
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what is liquefaction
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when shaking causes soil to act like a liquid
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what is a tsunami
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a water wave triggered by an earthquake, Volcanic eruption, or land slide
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How do you locate an earthquakes Epicenter
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Triangulation...... Where 3 circles meet
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