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vocabulary U2L6&7
| Term | Definition |
|---|---|
| earthquakes | ground movements that occur when blocks of rock in the Earth move suddenly and release energy |
| focus | a place within the Earth along a fault at which the first motion of an earthquake occurs there |
| epicenter | directly above the focus on Earth's surface |
| tectonic plate | giant sections of the lithosphere on Earth's surface |
| fault | a break in the Earth's crust along which blocks or rock move |
| deformation | the process by which rock becomes deformed and changes shape due to stress |
| elastic rebound | return of rock to its original shape after elastic deformation |
| volcano | any place where gas, ash or melted rock come out of the ground |
| magma | melted rock that is less dense than solid rock |
| lava | magma that has reached the Earth's surface |
| hot spot | location where a column of extremely hot mantle rock called a mantle plume rises through the asthenosphere |
| tectonic plate boundary | where two or more tectonic plates meet |
| vent | opening of a volcano |
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sadranuna
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