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15 terms

Science Chapter 10 Vocab

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Aftershock
A smaller earthquake that follows a larger earthquake
Body Waves
Waves of energy that travel from the focus of an earthquake through the material of Earth's body; P waves and S waves are two types of body waves
Earthquake
The shaking of Earth's crust caused by a release of energy
Epicenter
The point on Earth's surface directly above the focus of an earthquake
Fault
A break in the lithosphere along which movement has occurred
Focus
The point at which the first movement occurs during an earthquake
Liquefaction
A temporary state in which loose soil and rock materials take on the property of liquid, often as a result of severe ground shaking
Magnitude
The measure of the amount of energy released in an earthquake
P Waves
Body waves that squeeze and stretch rock materials as they pass through Earth; also known as a compressional waves or primary waves
S Waves
Body waves that cause particles of rock material to move at right angles to the direction in which the waves are traveling; also known as shear waves or secondary waves
Seismic Gap
An area along a seismically active fault where no earthquake activity has occurred over a long period of time
Seismogram
The recording of an earthquake made by a seismograph
Seismograph
An instrumentthat detectst and records waves produced by earthquakes
Surface Waves
Earthquake waves that travel along Earth's surface; Love waves and Rayleigh waves are two types of a surface waves
Tsunami
A larage ocean wave that results from an underwater earthquake, landslide, or volcanic eruption