Plates Flashcards

1
Q

Why does Asthenosphere mean

A

when the convection currents in the mantle move the plates

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2
Q

What are the four types of plate boundaries

A

Constructive
Destructive
Conservative
Collision zone

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3
Q

What are the 8 main plates

A
Pacific
North American 
South American 
Nazca 
African plate 
Eurasian 
Antarctica 
Indo-Australian plate
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4
Q

Describe how the distribution of earthquakes is linked to the earths tectonic plates
(3 marks)

A

The earthquake locations are very close together, they are also on the plate boundaries. There are less earthquakes on plate boundaries where the plates move away from each other. There are more earthquakes where plate boundaries move towards each other or slide past each other. The highest frequency of earthquakes is around the Pacific plate.

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5
Q

In which direction does a constructive plate boundary move?

A

It moves away from each other

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6
Q

In which direction does a destructive plate boundary move?

A

They move towards each other

—->

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7
Q

In which direction does a conservative boundary move?

A

They move past each other

  • —>
  • —>
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8
Q

In which direction does the collision zone plates move

A

They move towards each other

—->

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