8TH EARTH'S CRUST /EARTH QUAKES/VOLCANOESVOCABULARY
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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EARTHQUAKE | causes vibrations in the ground that result from movement along breaks in earths lithosphere.
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PLATE BOUNDARY | where earths lithospheric plates move and interact with each other.
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FAULT | break in earths litosphere where one block of rock moves toward,away from,or past another.
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EPICENTER | location directly above the focus of an earthquake.
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FOCUS | location directly above the focus of an earthquake.
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PRIMARY WAVE | p-wave, Fastest-moving type of seismic wave ;causes particles in the ground to move in a push pull motion.
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SECONDARY WAVE | S-wave;causes particles in the ground to move side to side and up and down at right angles relative to the directions the wave travles.
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SELSMIC WAVE | travles as vibrations on and in earth.
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SEISMOGRAM | graphical illustration of seismic waves
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SEISMOLOGIST | scientist who studies earthquakes
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SEISMOMETER | measures and records ground motion and the distance and direction seismic waves travel
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SURFACE WAVE | causes particles in the ground to move up and down, similar to ocean waves.
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