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Definition
| A force that acts on rock to change its shape or volume |
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Definition
| Stress that stretches rock so that it becomes thinner in the middle |
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Definition
| Stress that squeezes rock until it folds or breaks. |
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| Stress that pushes masses of rock in opposite directions, in a sideways movement. |
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Definition
| A type of fault where the hanging wall slides downward; caused by tension in the crust. |
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Definition
| The block of rock that forms the upper half of a fault. |
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Definition
| The block of rock that forms the lower half of a fault. |
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Definition
| A type of fault where the hanging wall sides upward; caused by compression in the crust. |
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Definition
| A type of fault in which rocks on either side move past each other sideways with little up or down motion. |
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Definition
| An upward fold in rock formed by compression of Earth’s crust. |
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Definition
| A downward fold in rock formed by compression in Earth’s crust. |
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Definition
| A large area of flat land elevated high above sea level. |
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Definition
| The shaking that results from the movement of rock beneath Earth’s surface. |
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Definition
| The point beneath Earth’s surface where rock breaks under stress and causes an earthquake. |
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Definition
| The point on Earth’s surface directly above an earthquake’s focus. |
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Definition
| A type of seismic wave that compresses and expands the ground. |
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Definition
| A type of seismic wave that moves the ground up and down or side to side. |
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Definition
| A type of seismic wave that forms when P waves and S waves reach Earth’s surface. |
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Definition
| A scale that rates earthquakes according to their intensity and how much damage they cause at a particular place. |
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Definition
| A measurement of an earthquake’s strength based on seismic waves and movement along faults. |
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Definition
| A scale that rates the seismic waves as measured by a particular type of mechanical seismograph. |
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Definition
| A device that records ground movements caused by seismic waves as they move through Earth. |
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Term
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Definition
| A scale that rates earthquakes by estimating the total energy released by an earthquake. |
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