Volcanos Flashcards

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1
Q

What is a volcano

A

A volcano is an opening, or rupture, in a planets surface of crust, which allows hot magma, volcanic ash and gases to escape from below the surface

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2
Q

How many types of volcano are there

A

There a 3 different types of volcano. Geographers call the categories active, dormant and extinct

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3
Q

What is an active volcano

A

An active volcano is liable to erupt at any time e.g. Mt Etna

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4
Q

What is a dormant volcano

A

A dormant has not erupted for many years. E.g. Mt Pinatubo erupted in 1991 after 500 years of dormancy

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5
Q

What is an extinct volcano

A

An extinct volcano has not erupted for a very long time and is unlikely to erupt again e.g. Mt Kulal in Kenya

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6
Q

List the first benefit of living near a volcano

A

About 44% of icelands total energy comes from geothermal energy where boiling underground water, heated by the hot rocks deep below the surface, produces steam which can be used to generate electricity

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7
Q

List the second benefit of living near a volcano

A

Over 120 mostly open-air swimming pools are heated by the naturally occurring hot water

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8
Q

List the third benefit of living near a volcano

A

Greenhouses producing, tomatoes, cucumbers and flowers are heated using geothermal energy

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