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6th Grade Unit 3.2 Earthquakes

Horizontales
Seismic waves that move along Earth's surface, not through its interior.
A process in which the skaking of the ground causes soil to act like a liquid. This occurs only in areas where the soil is made up of loose sand and silt and contains a large amount of water.
A number that characterizes the relative size of an earthquake. It is based on measurement of the maximum motion recorded by a seismograph. Generally, it is the relative size of an object .
The seismic waves that arrive at any location after an earthquake, which follow primary waves.
A smaller earthquake that follows a more powerful earthquake in the same area.
A shaking of the ground caused by a sudden movement of large blocks of rock along a fault.
The fastest seismic waves, the first to reach any location after an earthquake occurs.
A fracture, or break in the Earth's lithosphere.
Verticales
The point underground where rocks first begin to move.
Vibrations caused by earthquakes.
An instrument that constantly records ground movement.
A water wave triggered by an earthquake, volcanic eruption, or lansdlide. They are sometimes called tidal waves.
The point on Earth's surface directly above the focus.
The force exerted when an object presses on it, pulls on, or pushes against another object.