Plate Tectonics (Chapter 18) Flashcards

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1
Q

State two ways in which continental crust and oceanic crust are different

A
  1. Position compared to the Ocean
    Continental mostly above the ocean
    Oceanic is mostly below the ocean
  2. What rock makes up the crust (composition of crust)
    Continental is made of granite
    Oceanic is made of basalt
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2
Q

What are the three types of plate boundaries?

A

Convergent, Divergent, Conservative

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3
Q

What is a convergent plate boundary? (Give me the special Word to describe the movement of the plates.)

A

When oceanic plate goes below continental plate (subduction)

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4
Q

What is the Effect of a convergent plate boundary? (give Special name)

A

Destructive - old crust (Oceanic plate) is destroyed

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5
Q

What will happen at a convergent boudary?

A

Earthquakes and strato - volcanoes

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6
Q

What is a Divergent Plate Boundary? (Give me the special Word to describe the movement of the plates.)

A

when two plates spread in opposite ways

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7
Q

What is the effect of Divergent Plate Boundary?(special name)

A

Constructive - new crust created A crust factory.

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8
Q

what will happen at a Divergent Plate Boundary?

A

Earthquakes and shield volcanoes

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9
Q

what is a conservative plate boundary?

A

The plates slide sideways by each other

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10
Q

what is the effect of conservative plate boundary?

A

Crust neither created nor destroyed

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11
Q

what will happen at a conservative plate boundary?

A

Earthquakes only

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12
Q

what are the two types of crusts?

A

Oceanic, and continental

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13
Q

what is the term (word) for any natural event that threatens people and property?

A

Natural Disaster

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