plate tectojnics Flashcards

(20 cards)

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 upper layer of the earth’s mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.

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3
Q

Mesosphere

A

it the coldest part of the amatsphere

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4
Q

Inner Core

A

it the hottest part of the earth in it the millde of the earth

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5
Q

Outer Core

A

the earth fluid layer 2,330 kmeter thicc the core right under the earth

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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 topmost layer, about 500 metres

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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 degree of compactness of a substance.

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10
Q

Wegener

A

he a guy that thought of the theroy of the continetal drift

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11
Q

Continental Drift

A

Continental drift was a theory that explained how continents shift position on Earth’s surface.

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12
Q

Convergent Boundary

A

In plate tectonics, a convergent boundary, also known as a destructive plate boundary

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13
Q

Divergent Boundary

A

In plate tectonics, a divergent boundary or divergent plate boundary

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14
Q

Transform Boundary

A

A transform fault or transform boundary, is a type of fault whose relative motion is predominantly horizontal, in either a sinistral or dextral direction.

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15
Q

Sea-floor Spreading

A

the formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side.

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16
Q

Pangaea

A

Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras.

17
Q

Laurasia

A

Laurasia was the more northern of two supercontinents that formed part of the Pangaea supercontinent around 300 to 200 million years ago.

18
Q

Gondwana

A

In paleogeography, Gondwana, also Gondwanaland, is the name given to an ancient supercontinent. I

19
Q

Mesosaurus

A

Mesosaurus is an extinct genus of reptile from the Early Permian of southern Africa and South America.

20
Q

Glossopteris

A

Glossopteris is the largest and best-known genus of the extinct order of seed ferns known as Glossopteridales. T