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Science > Earth Science Terms > Flashcards

Earth Science Terms Flashcards

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1
Q

Igneous

A

Melted rock

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2
Q

Metamorphic

A

Reheated

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3
Q

Sedimentary

A

Rock pieces

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4
Q

Magma

A

Melted in the earth

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5
Q

Lava

A

Melted outside of earth

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6
Q

The types of rocks

A

Igneous, metamorphic, sedimentary

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7
Q

Convection currents

A

Causes plates to move

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8
Q

Divergent plate boundaries

A

Where plates move apart

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9
Q

Convergent plate boundaries

A

Where plates come together

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10
Q

Mountain building, subduction zone, and transform fault

A

Three types of convergent plate boundaried

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11
Q

Pangaea

A

A supercontinent that existed over tens of millions of years ago

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12
Q

Continental drift

A

Idea of how continents moved

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13
Q

Alfred wegener

A

Proposed the idea of continental drift

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14
Q

Wegener’s evidence

A

Fossils, climate change, and common geological features

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15
Q

Oceanic floor spreading

A

Mid oceanic ridge adding new matorral to the ocean floor

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16
Q

Seismic waves

A

Waves sent through the earth

17
Q

S waves

A

Can only travel through solid

18
Q

P waves

A

Can travel through solids, liquids, and gases

19
Q

Interior of the earth

A

Hard boiled egg

20
Q

Earth’s core

A

Iron and cobalt

21
Q

Lower mantle

A

Mesosphere

22
Q

Lithosphere

A

Crust

23
Q

Asthansphere

A

Upper mantle

24
Q

Outer core

A

Less dense

25
Q

Inner core

A

Iron and cobalt

26
Q

Trace fossils

A

Footprints and activities of animals that are fossilized

27
Q

Molds

A

A hole created by a decayed animal or plant

28
Q

Casts

A

A hole that is filled with minerals from watrt

29
Q

True form fossils (petrified)

A

A mold that is filled with minerals and is turned to stone

30
Q

Carbon films

A

Thin coating of carbon on rock

31
Q

Preserved remains

A

Entire organism remains

32
Q

Paleontologist

A

A scientist who studies fossils

33
Q

How do we determine the relative age of rocks?

A

Compare to other rocks

34
Q

Law of superposition

A

In undisturbed sedimentary rocks the bottom is the oldest

35
Q

Law of cross cutting bodies

A

If an intrusion cuts across another layer, it is younger

36
Q

Rift valley

A

A lowland region that forms when the earths tectonic plates move apary

Science (11 decks)

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