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Vibrations in the earth caused by the sudden movement of rock is called earthquakes
The elastic rebound theory states that as a rock becomes stressed, it first deforms
The point along the fault where an earthquake begins is called the focus
The point on the earth's surface directly above the point where an earthquake begins is called the epicenter
A characteristic of earthquakes that causes most severe damage is a shallow focus
Most severe earthquakes occur at plate boundaries
P waves travel through both solids and liquids
S waves cannot pass through the asthenosphere
The Richter scale expresses the earthquake's magnitude
Most injuries in earthquakes are caused by a collapse of buildings
If an earthquake stikes you while you are in a car, you should stop the car in a clear space and remain in the car
A quake of lesser magnitude, usually one of a series, following a large earthquake in the same area aftershock
A sudden movement of the earth's crust caused by the release of stress accumulated along geologic faults or by volcanic activity earthquake
theory that rocks that are strained pass a certain point will fracture and spring back to their original shape elastic rebound theory
The point of the earth's surface directly above the focus of an earthquake epicenter
A point at which rays of light or other radiation converge or from which they appear to diverge, as after refraction or reflection in an optical system focus
amount of damage caused by an earthquake intensity
surface or long wave L wave
scale that expresses the intensity of an earthquake with a Roman numeral and a discription mercalli scale
primary wave p wave
major earthquake zone that forms around the pacific ocean Pacific ring of fire
scale that expresses the magnitude of an earthquake richter scale
secondary wave s wave
zone of rock in which a fault is locked and unable to move seismic gap
An instrument for automatically detecting and recording the intensity, direction, and duration of a movement of the ground, especially of an earthquake seismograph
A very large ocean wave caused by an underwater earthquake or volcanic eruption tsunami
Created by: bahginia