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The theory of movement and interaction of large plates of the earth's crust that explains earthquakes, volcanos and other geologic processes as consequences of the movement.
Industry:Natural environment
Fast-moving body waves that push and pull on rocks laterally; they move at 3 miles (5 km) per second.
Industry:Natural environment
The average time between specific events at a particular site.
Industry:Natural environment
Seismic energy that has been returned (reflected) from an interface of materials of different elastic properties.
Industry:Natural environment
Seismic energy that has been deflected by passing from one material to another with different elastic properties.
Industry:Natural environment
An increase in the amplitude of vibration of a body when the frequency of shaking is close to the natural frequency of the body.
Industry:Natural environment
The peak response of a series of simple harmonic oscillators of different natural frequencies when subjected to a particular earthquake ground motion.
Industry:Natural environment
A fault in which one block of rock slides up over another.
Industry:Natural environment
The angular shear strain produced from applying shear stress to a body. See shear modulus.
Industry:Natural environment
