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EE Vocab 16-30
Ever-Changing Earth Vocabulary 16-30
Term | Definition |
---|---|
Tsunami | a series of huge ocean waves often triggered by an underwater earthquake. |
Stress | a force that squeezes rocks together, stretches or pulls them apart or pushes them in different directions |
Focus | the point where part of the crust breaks loose and moves suddenly, causing an earthquake |
Vibrations | back and forth motions that carry energy from one place to another |
Epicenter | the point on the surface of the earth directly above the focus of an earthquake, often where the most damage from an earthquake occurs |
Body waves | seismic waves that travel through earth. |
Surface waves | seismic waves that travel along the surface of the earth. |
P-waves | longitudinal seismic waves that can travel through solids, liquids, or gases, and are the fastest type of seismic waves. |
S-waves | transverse seismic waves that can travel only through solids and are slower than P waves. |
Longitudinal wave | a type of wave that travels through Earth in a push-pull pattern. |
Transverse wave | a type of wave in which particle displacement is perpendicular to the direction of the wave. |
Seismograph | an instrument used to detect and measure seismic waves |
Magnitude | a measure of the strength of an earthquake or the energy released during an earthquake |
Richter Scale | a numerical scale used to measure the magnitude of an earthquake |
Triangulation | the process of finding an unknown location using its relationship to known locations, such as the distance of the unknown location from known locations |