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Geography > Plate Tectonics > Flashcards

Plate Tectonics Flashcards

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1
Q

The crust

A

◍ Outer layer
◍ Solid rock

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2
Q

Mantle

A

◍ Thickest layer of earth
◍ Uper mantleSemi-molten state
◍ lower mantle contains molten magma

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3
Q

Outer core

A

◍liquid state made of iron

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4
Q

Inner core

A

◍ solid cuz of pressure
◍ made of nickle and iron
◍ up to 5000 degrees

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5
Q

Continental Crust

A

◍ lies under continents
◍ thicc
◍ made of light rocks
◍ know by sial

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6
Q

Endogenic forces

A

◍ internal force drawing strength from the interior of the earth
◍ Volcano,earthquake,fold mountain

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7
Q

oceanic crust

A

◍ lies under oceans
◍ thin
◍ heavy rocks
◍sima

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8
Q

lithosphere

A

◍ part of earth internal structure
◍ solid rock
◍ deep

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9
Q

Asthenosphere

A

◍ part of earth internal structure
◍ molton state
◍ lithosphere floats on top

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10
Q

Moho line

A

◍ boundary between earths crust and mantle

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11
Q

proof of continental drift

A

◍ Continental fit
◍ fossil distribution
◍ common rock types
◍ match glacial deposits

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12
Q

proof of sea floor spreading

A

◍ young volcanic islands
◍ crust in the middle is younger

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13
Q

sea floor spreading

A

◍ theory of how new rocks are created on the sea floor where plates split apart
◍ harry hess

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14
Q

sliding plates

A

transform boundary

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15
Q

pulling plates

A

convergent boundary

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16
Q

seprating plates

A

divergent boundary

17
Q

sea-floor spreading landforms

A

◍ rift valleys
◍ mid-oceanic ranges
◍ volcanic islands

18
Q

Divergent/constructive plate boundaries

A

◍ sea floor spreading
◍ Mid-Atlantic ridge
◍ \two plates pull apart
◍ plates move in opposite directions
◍ Rising magma solidifies making new land and rift valleys

19
Q

Destructive/convergent plate boundaries

A

◍ 2 plates collide
◍ subduction -older heavier plate sinks beneath the younger one

20
Q

Oceanic-oceanic

A

◍ 2 ocean plates collide
◍ Ocean trenches,volcanic activity
◍ japan

21
Q

Oceanic-continental

A

◍ an ocean and continental plate collide
◍ fold mountains,volcanoes
◍ Andes mountains

22
Q

Continental-Continental

A

◍ 2 continental plates collide
◍ fold mountains
◍ Himalayas and the alps

23
Q

Transform plate boundaries

A

◍ Process- seismic activity
◍ fault lines by earthquakes
◍ san andreas fault california
◍ Rock is neither created or destroyed
◍ Plates slide past-friction
◍ line where plates slide known as a fissure/fault

24
Q
A

Geography (20 decks)

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