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Science > Chapter 7- Volcanoes > Flashcards

Chapter 7- Volcanoes Flashcards

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0
Q

What is a convergent boundary?

A

When plates move towards each other, forming an island arc

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1
Q

What is a divergent boundary?

A

When the plates are moving apart in opposite directions

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2
Q

What is a hot spot?

A

Hot material under the earths surface

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3
Q

What is viscosity?

A

How slowly a liquid moves

The higher the temp. the more less the viscosity

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4
Q

What is a magma chamber?

A

Where the magma is stored in the volcano

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5
Q

What is the pipe?

A

The tube where the magma travels up to come out

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6
Q

What is the vent?

A

The place where the magma comes out

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7
Q

What is the lava flow?

A

The flowing of the lava on the outside of the volcano

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8
Q

What is a crater?

A

A hole in the ground formed by falling rock from a volcano

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9
Q

What is a dormant volcano?

A

A volcano that is not active at the moment but will be in the future

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10
Q

What is an extinct volcano?

A

A volcano that will not erupt again

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11
Q

What is an active volcano?

A

A volcano that is erupting right now

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12
Q

What is a shield volcano?

A

A volcano that is very short, has a quiet eruption

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13
Q

What is a cinder cone volcano?

A

A volcano that is shaped like a cone and has an explosive eruption

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14
Q

What is a composite volcano?

A

A pointy volcano that can have an explosive or quiet eruption

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15
Q

What is a caldera?

A

A volcano that exploded and left a hole in its place

16
Q

What is a volcanic neck?

A

A jagged form left from an eruption

17
Q

What is a dike?

A

A crack I’m the ground left from eruption

18
Q

What is a sill?

A

Jagged forms in a wall left from eruption

19
Q

What is a batholith?

A

A round, smooth surface left from eruption

20
Q

What is a geyser?

A

A spout with hit water pouring out of it as a result of geothermal activity

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