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7 Cards in this Set

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  • Back
earthquake
vibrations caused by the sudden release of energy, usually as a result of displacement of rocks along faults
seismology
the study of earthquakes
focus
the site withink Earth where an earthquake originates adn energy is released
epicenter
the point on Earth's surface directly above the focus of an earthquake
Moho discontinuity
the boundary between Earth's crust and mantle
refraction
the change in direction and velocity of a seismic wave when it travels from one material into another of different density or elasticity
reflection
the return to the source of some of a seismic wave's energy when it encounters a boundary separrating materials of different density or elasticity