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Science- Earthquake
Term | Definition |
---|---|
Body wave | a seismic wave that travels through Earth’s interior. |
Earthquake | shaking and vibration of Earth’s surface. |
Epicenter | the point on Earth’s surface directly above the focus, or origin, of an earthquake. |
Fault | a fracture in Earth’s crust where the rocks on either side have moved. |
Focus | the point within Earth where an earthquake originates. Also known as the hypocenter. |
P-wave | one of two types of body waves that are produced by earthquakes |
S-wave | one of two types of body waves that are produced by earthquakes. |
Seismic wave | a vibration produced by an earthquake |
Seismogram | a graphical record of ground vibrations. Seismograms are made by instruments called seismographs. |
Seismograph | an instrument that measures and records ground vibrations |