Chap 9 Voc/ Hulsey

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Author:
martha.hulsey
ID:
58525
Filename:
Chap 9 Voc/ Hulsey
Updated:
2011-01-14 09:40:27
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Chapter Voc Science
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Description:
Chapter 9 Vocabulary words
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  1. the body of molten rock that feeds a volcano
    magma chamber
  2. an opening at the surface of the Earth through which volcanic material passes
    vent
  3. a vent or fissure in the Earth's surface through which magma and gases are expelled
    volcano
  4. a large, semicircular depression that forms when the magma chamber below a volcano partially empties and causes the ground above to sink
    caldera
  5. a funnel-shaped pit near the top of the central vent of a volcano
    crater
  6. a wide, flat landform that results from repeated nonexplosive eruptions of lava that spread over a large area
    lava plateau
  7. an area of deep cracks that forms between two tectonic plates that are pulling away from each other
    rift zone
  8. a volcanically active area of Earth's surface far from a tectonic plate boundary
    hot spot
  9. the way lava flows
    viscosity
  10. lava that explodes out of a volcano and hardens when it comes in contact with the air
    pyroclastic material
  11. clouds of ash, dust and gases that flows from a volcano
    pyroclastic flow

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