paleontology Flashcards

1
Q

Lithosphere

A

the solid, outer part of Earth

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2
Q

Asthenosphere

A

the upper layer of the earth’s mantle,

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3
Q

Mesosphere

A

a layer of Earth’s atmosphere.

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4
Q

Inner Core

A

a hot, dense ball of (mostly) iron

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5
Q

Outer Core

A

mostly composed of liquid iron and nickel

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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 outermost layer of Earth’s lithosphere that is found under the oceans and formed at spreading centres on oceanic ridges, which occur at divergent plate boundaries.

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8
Q

Continental Crust

A

Continental crust is the layer of igneous, sedimentary, and metamorphic rocks that forms the geological continents and the areas of shallow seabed close to their shores, known as continental shelves.

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9
Q

Density

A

the. amount of matter

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10
Q

Alfred Wegener

A

Alfred Lothar Wegener was a German climatologist, geologist, geophysicist, meteorologist, and polar researcher

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11
Q

Continental Drift

A

one of the earliest ways geologists thought continents moved over time.

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12
Q

Convergent Boundary

A

A convergent boundary is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other

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13
Q

Divergent Boundary

A

In plate tectonics, a divergent boundary or divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from each other. Divergent boundaries within continents initially produce rifts, which eventually become rift valleys.

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14
Q

Transform Boundary

A

The transform plate boundary is a broad zone forming as the Pacific Plate slides northwestward past the North American Plate.

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15
Q

Sea-floor Spreading

A

a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other

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16
Q

Pangaea

A

the continent we now know as North America was contiguous with Africa, South America, and Europe.

17
Q

Laurasia

A

one of the two ancient supercontinents produced by the first split of the even larger supercontinent Pangaea about 200 million years ago,

18
Q

Gondwana

A

Gondwana was a large landmass, often referred to as a supercontinent, that formed during the late Neoproterozoic (about 550 million years ago)

19
Q

Mesosaurus

A

Mesosaurus is an extinct genus of reptile from the Early Permian of southern Africa and South America. Along with it, the genera Brazilosaurus and Stereosternum, it is a member of the family Mesosauridae and the order Mesosauria.

20
Q

Glossopteris

A

Glossopteris [etymology: from Ancient Greek γλῶσσα + πτερίς ] is the largest and best-known genus of the extinct Permian order of seed ferns known as Glossopteridales. The genus Glossopteris refers only to leaves, within a framework of form genera used in paleobotany.