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14 Cards in this Set
- Front
- Back
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When molten rock breaks through the Earth's surface, it is called _____.
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magma
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Magma may cool and become _____ rock in Earth's crust.
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igneous
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Lava that is thick and sticky and cools quickly is called _____ lava.
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viscous
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As viscous lava flows out of the vent of a volcano, it forms steep-sided, cone-shaped mountains, or _____ volcanoes.
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composite
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Lava that is thick and sticky and cools quickly is called _____ lava.
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viscous
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Lava that is thin, runny and does not dry quickly is called _______ lava. (two words with a hyphen)
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non-viscous
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Non-viscous lava can travel several _____ before it cools.
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miles
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Non-viscous lava forms low, flat mountains called _____ volcanoes.
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shield
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Sometimes an eruption is so violent it destroys all or part of a volcano leaving only a _____.
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crater
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_____ volcanoes are constantly erupting.
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active
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_____ volcanoes erupt at regular intervals.
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intermittent
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_____ volcanoes are inactive, but can become active again.
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dormant
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_____ volcanoes have been inactive for hundreds of years, and will probably never erupt again.
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extinct
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The largest active volcano on Earth is _____ ____, in Hawaii. (Two words)
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Mauna Loa
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