Plate Tectonics Flashcards

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0
Q

Is the inner core solid or liquid?

A

Solid

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1
Q

What is the inner core made of?

A

Iron and nickel

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2
Q

What is the outer core made of?

A

Molten iron and nickel

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3
Q

Why is the mantle important to plate tectonics?

A
  • tectonic plates float on top of the mantle
  • where convection occurs
  • source of magma
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4
Q

What three types of rock make up the crust?

A

Igneous, metamorphic, an sedimentary

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5
Q

What moves on top of the asthenosphere?

A

Tectonic plates

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6
Q

What are the two types of crust?

A

Oceanic and continental

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7
Q

What are four pieces of evidence for continental drift?

A

1) glacial scars
2) close fit coastlines (puzzle pieces)
3) fossil species
4) coal deposits in America

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8
Q

What is pangaea

A

Super continent

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9
Q

Who discovered continental drift?

A

Alfred Wegener

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10
Q

What are the three ideas that make up plate tectonics?

A

1) continental drift
2) sea floor spreading
3) subduction

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11
Q

What happens at a divergent boundary?

A

Sea floor spreading

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12
Q

What is created from sea floor spreading?

A

New oceanic crust, mid ocean ridge

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13
Q

Two zones of tremendous volcanic activity?

A

Ring of fire and mid atlantic ridge zone

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14
Q

What is formed at a convergent boundary?

A

Most of the time a trench, volcanic mountains

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15
Q

What is created at a divergent boundary?

A

Mid ocean ridge

16
Q

What is created at a transform boundary

A

Fault, earthquakes

17
Q

What three pieces if evidence prove lithospheric plates are moving?

A

Continental drift evidence
Earthquakes
Atlantic ocean spreading
Formation of hawaii