Earths interior Flashcards

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1
Q

2 Discontinuities and where they are.

A

Mohoriocic-Between crust and mantle

Gutenberg-Between Mantle and core

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2
Q

Sea floor

A

Bottom of the ocean

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3
Q

Viscous

A

Thick and sticky liquid

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4
Q

Mantle

A

Middle layer of the Earth

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5
Q

Volume

A

The space an object occupies

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6
Q

Crust

A

Rocky outer layer of Earth

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7
Q

Discontinuities

A

Area between Earth’s interior layers

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8
Q

Core

A

Extremely hot center of the Earth-solid

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9
Q

Two types of evidence geologists use to learn about Earths interior

A

Direct evidence from rock samples

Indirect evidence from seismic waves

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10
Q

2 types of crust

A

Oceanic- consists mostly of basalt

Continental-consists of mainly granite

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11
Q

Lithosphere?

A

Uppermost part of mantle and the crust for a ridge layer about 100 kilometers thick.

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12
Q

Three parts of the Mantle

A

Lithosphere
Asthenosphere
Lower mantle

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13
Q

Asthenosphere?

A

Softer part of mantle below the lithosphere which is hotter and under increased pressure.

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14
Q

Lower mantle?

A

Solid material extending all the way to Earths core…

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15
Q

Two parts of the Core?

A

Outer and Inner Core

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16
Q

Outer Core?

A

Layer of molten metal that surrounds inner core.

17
Q

Inner Core?

A

Dense ball of solid metal.

18
Q

3 types of heat transfer

A

Conduction
Convection
Radiation

19
Q

Radiation?

A

The transfer of energy through the empty space-has no direct contact.

20
Q

Conduction?

A

Heat transfer by direct contact of particles of matter.

21
Q

Convection?

A

Transfer of heat by the movement of heated fluids

22
Q

Density?

A

Measure of how much mass there is in a volume of a substance.

23
Q

What causes convection currents in Earths mantle?

A

Heat source is the Earths core and from the mantle itself