Volcanoes Flashcards

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1
Q

What does a volcano let out while erupting?

A

They let out ash, gas and hot magma

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2
Q

What is geothermal activity?

A

Geothermal activity are underground streams and rivers boiling hot converted into electricity

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3
Q

Why does a volcano erupt?

A

Magma builds up pressure, making lava spill out the top. The longer the pressure, the bigger the eruption.

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4
Q

Name the three stages in a volcanoes life

A

Active-Exploding every so often
Dormant-Not active for a while but still able to erupt
Extinct-When it will never erupt again no matter what

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5
Q

Name two negative effects of a volcano

A

Destroying buildings and crops, bridges, roads and railways, therefore disrupting communication.

Ultimately they can kill both people and other living things

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6
Q

Name two positive effects of a volcano

A

The produce geothermal activity

Used as the main source of power creating jobs for local people and attracts tourists

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7
Q

What is a volcano?

A

A volcano is an opening in the earth’s crust which erupts if they are active

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