Plate boundaries Flashcards

1
Q

Can we predict what formations and hazards will occur in an area?

A

yes

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2
Q

What does the continental crust have a lot of what?

A

quartz

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3
Q

What’s the average density of a continental crust?

A

2.6 g/ cm3

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4
Q

What does the oceanic crust have a lot of what?

A

mafic/ basalt

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5
Q

What’s the average density of an oceanic crust?

A

3 g/ cm3

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6
Q

When two continental crust with the same densities collide what do they form?

A

mountains

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7
Q

When two continental crust with different densities collide what do they form?

A

volcanoes

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8
Q

How do plate tectonic plates move?

A

By the Convection currents

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9
Q

Which rocks are more dense? hot or cooler rocks.

A

Cooler

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10
Q

What are some examples of divergent plate boundaries?

A

Mid-ocean ridges

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11
Q

What are some examples of convergent plate boundaries?

A

The Himalaya mountains

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12
Q

What are some examples of a subduction zone?

A

trenches

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13
Q

What are some examples of transform plate boundaries?

A

San Andres Fault, in California

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14
Q

Do the convection currents go in the same direction as the tectonic plate boundaries?

A

yes

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15
Q

What do volcanology maps tell us?

A

That volcanoes are abundant along the west coast

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16
Q

What does the seismology map tell us?

A

Earthquakes are abundant along the west coast and scattered elsewhere

17
Q

What does the geography map tell us?

A

The topography of mountains and high mountains lie near the coasts

18
Q

What does the geochronology map tell us?

A

the distribution of oceanic floor and the older oceanic floors lie near the coasts