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Ch 9- 8th Grade Sci
Ch 9- 8th Grade Science-Volcanos
Question | Answer |
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Volcano | A vent or fissure in the Earth's surface through which magma and gases are expelled. |
Magma Chamber | The body of molten rock that feeds a volcano. |
Vent | An opening at the surface of the Earth through which volcanic material passes. |
Crater | A funnel-shaped pit near the top of the central vent of a volcano. |
Caldera | A large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink. |
Lava Plateau | A wide, flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area. |
Rift Zone | An area of deep cracks that forms between two tectonic plates that are pulling away form each other. |
Hot Spot | A volcanically active area of Earth's surface far from a tectonic plate boundary. |