LAYERS OF THE EARTH Flashcards by Chandler Bing

Q

thinnest layer

A

the crust

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Q

outermost layer

A

the crust

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Q

two regions of the crust

A

continental

oceanic

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Q

granite rock

A

continental crust

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Q

50-100 km

A

continental crust

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Q

older than the other crust

A

continental crust

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Q

basalt rock

A

oceanic crust

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Q

5-8 km

A

oceanic crust

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Q

denser than the other crust

A

oceanic crust

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Q

what rock is denser than what rock

A

basalt than granite

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Q

how many percent volume does the mantle cover up the earth

A

80%

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Q

how many percent of land mass does the mantle cover up

A

68%

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Q

high pressure and temperature

A

the mantle

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Q

solid rock flow slowly

A

the mantle

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Q

two parts of the mantle

A

upper

lower

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Q

geological events in the upper mantle

A

volcanic activity

earthquakes

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Q

what indicates that the outer mantle is solid

A

geological events

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Q

solid but plastic

A

lowet mantle

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Q

soft

A

lower mantle

Q

denser than the other mantle

A

lower mantle

Q

ball of hot metals

A

te outer core

Q

metals are in liquid state

A

the outer core

Q

what metals are in the outer core

A

nickel and iron

Q

core: high temp and pressure

A

the inner core

metals squeezed together

the inner core

metals vibrate like a solid

the inner core

crust + upper mantle

lithosphere

rigid and brittle rock

lithosphere

crust broken to pieces

listosperic plates

broken pieces of crust

plates

where the listosperic plates float

athenosphere

soft, semi rigid

athenosphere

below the lithospere

athenosphere

hot molten material

athenosphere

convection of molten rock happens

athenosphere

weak

athenosphere

easy earth movement because its weak

athenosphere

why does middle mantle flow

convection currents

caused by the hot material at the deepest part of the mantle rising

convection currents

cools then sinks

convection currents

moves crust

convection currents

boundary between crust and mantle

mohorovicic discontinuity

mohorovicic named after

andrija mohorovicic

boundary between mantle and outer core

gutenberg discontinuity

gutenberg named after

beno gutenberg

beno gutenberg

german seismologist

layers of the earth

crust mantle outer core inner core