plate tetonic Flashcards

1
Q

Lithosphere

A

the rigid outer part of the earth, consisting of the crust and upper mantle.

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2
Q

Asthenosphere

A

The asthenosphere is the highly viscous, mechanically weak and ductilely deforming region of the upper mantle of the Earth.

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3
Q

Mesosphere

A

the region of the earth’s atmosphere above the stratosphere and below the thermosphere

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4
Q

Inner Core

A

The Earth’s inner core is the Earth’s innermost part

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5
Q

Outer Core

A

The outer core of the Earth is a fluid layer

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6
Q

Seismic Waves

A

an elastic wave in the earth produced by an earthquake or other means.

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7
Q

Oceanic Crust

A

the relatively thin part of the earth’s crust which underlies the ocean basins. It is geologically young compared with the continental crust and consists of basaltic rock overlain by sediments.

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8
Q

Continental Crust

A

the relatively thick part of the earth’s crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.

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9
Q

Density

A

the volumetric mass density

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10
Q

Alfred Wegener

A

made the theory of pangaea

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11
Q

Continental Drift

A

the gradual movement of the continents across the earth’s surface through geological time.

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12
Q

Convergent Boundary

A

A tectonic boundary where two plates are moving toward each other.

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13
Q

Divergent Boundary

A

Divergent boundaries in the middle of the oceans cause seafloor spreading.

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14
Q

transform fault

A

A transform fault or transform boundary is a plate boundary where the motion is predominantly horizontal

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15
Q

Sea-floor Spreading

A

the sea floor spreading

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16
Q

pangaea

A

all of the continents together

17
Q

lurasia

A

some continents together

18
Q

Gondwana

A

the rest of the continents put together

19
Q

Mesosaurus

A

dinosaurs