L2- Stories That Stick Flashcards

1
Q

What happens at a constructive plate boundary?

A

The oceanic and continental plates move apart

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2
Q

What happens at a destructive plate boundary?

A

The plates collide

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3
Q

When are collision zones formed?

A

Collision zones are formed when two continental plates collide. Neither plate is forced under the other so a form fold mountain is formed.

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4
Q

How thick is continental crust?

A

30 to 50 km thick

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5
Q

How thick is oceanic crust?

A

6km to 10km thick

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6
Q

Is continental crust more dense or less dense? And which one do you think is subducted?

A

Continental crust is less dense so cannot be subducted!

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7
Q

Name a few examples of what you might get at a destructive plate boundary?

A
Andes mountains (Peru)
Destructive earthquakes (around 9.5 magnitude)
Tsunamis
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8
Q

Does andesitic magma have a lower temperature?

A

Yes, andesitic magma has a lower temperature than normal magma!

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9
Q

Name the two types of plate boundary?

A

Destructive

Constructive

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