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earths layers > earths layers > Flashcards

earths layers Flashcards

1
Q

what are the mechanical layers?

A

lithosphere, asthenosphere. mesosphere,outer core, inner core

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2
Q

what are the compositional layers?

A

crust , mantle core

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3
Q

what are the two crust

A

Continental, oceanic

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4
Q

which crust is thicker and less dense

A

continental

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5
Q

which crust is thinner and more dense?

A

oceanic

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6
Q

which layer is sludgy like ooblek or toothpaste?

A

Asthenosphere

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7
Q

which core is ligiud

A

outer

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8
Q

which core is solid

A

inner

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9
Q

which waves are seismic

A

p and s waves

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10
Q

which wave goes though all mediums

A

p

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11
Q

which wave is longitudinal

A

p

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12
Q

large shadow zone

A

s

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13
Q

less damage

A

p

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14
Q

how does studying how waves move help scientists

A

They learn more about the interior of Earth

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15
Q

who discovered continental drift

A

wegner

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16
Q

what is a pangea

A

when all the continents were connected

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17
Q

how do we know alll of the continents were connected

A

fossils of plats and animals on different continents

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18
Q

what are convection cells

A

rising and sinking of hot magma

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19
Q

what are the plate boundaries

A

convergent, transform,divergent

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20
Q

where do mid ocean ridges form

A

divergent

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21
Q

where is seafloor spreading

A

divergent

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22
Q

most common reason for earthquake because of plates getting stuck

A

transform

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23
Q

where do 2 plates collide

A

convergent

24
Q

which boundaries creates volcanoes and mountain and trenches

A

convergent

25
Q

when does subduction happen

A

when earth recycles itself

26
Q

3 facts about Marian trench

A

crescent shape 7 miles at deepest point, challenger deep

27
Q

most powerful force on earth

A

tectonic plates moving

28
Q

who discovered seafloor spreading

A

Henry Hess

29
Q

which mt range is rounded and 2000 miles long

A

appalachian

30
Q

which mountain range is jagged and tallest peak over 14000 ft

A

rocky

31
Q

which mt is in Asia where the Indian and Eurasian plates crashed

A

Himalayas

32
Q

plates releasing stress and energy in the rocks is what?

A

an earthquake

33
Q

80% are found in the ring of fire

A

earthquakes

34
Q

75% found in the ring of fire

A

volcanoes

35
Q

what is the inner core made of

A

iron and nickle

36
Q

loudest sound in history

A

the krakatoa

37
Q

transform

A

rubbing against each other

38
Q

convergent ocean to ocean

A

subduction

39
Q

convergent continent to continent

A

hit each other

40
Q

divergent

A

move away from each other

41
Q

about ___ of all earthquakes strike around the _________

A

90% and pacific ocean basin

42
Q

in japan quakes are caused by ____ to ____ convergence

A

ocean, ocean

43
Q

what did new Madrid fault form ?

A

reelfoot lake

44
Q

how fast is the pyroclatic flow

A

100-400km/hr

45
Q

______ will decrease melting point in the mantle

A

water

46
Q

which MT has wildfires

A

rocky

47
Q

shock wave from final explosion traveled the world __ time in __ days

A

7 , 5

48
Q

which crust will subduct under continental crust and younger ocean crust

A

ocieanic

49
Q

most common reason for earthquakes

A

transform

50
Q

most common reason for earthquakes

A

transform

51
Q

s waves shadow zone

A

104

52
Q

p waves shadow zone

A

40

53
Q

which waves bends when moving around layers

A

p

54
Q

what are 3 ways mantle rocks melt

A

temp rises, pressure lowers, add water

55
Q

common places for volcanoes

A

Alaska, Hawaii, Iceland, central america

earths layers (1 decks)

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