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14 Cards in this Set

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