Topic 2: Lesson 1: Earth's Interior Flashcards

Earth's Systems

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1
Q

direct evidence (geologist use to study interior)

A

rock samples

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2
Q

indirect evidence (geologists use to study interior)

A

seismic waves

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3
Q

seismic waves

A

waves produced by earthquakes

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4
Q

rock that forms Earth’s outer layer

A

crust

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5
Q

part of the crust that forms continents

A

continental crust

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6
Q

makes up continental crust

A

granite

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7
Q

part of the crust that lies beneath the ocean

A

oceanic crust

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8
Q

makes up oceanic crust

A

basalt

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9
Q

layer of hot rock below the crust

A

mantle

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10
Q

rigid layer made up of the uppermost part of the mantle and the crust.

A

lithosphere

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11
Q

softer part of the mantle below the lithoshpere

A

asthenosphere

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12
Q

a layer of molten metal that surrounds the inner core

A

outer core

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13
Q

dense ball of solid metal

A

inner core

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14
Q

the transfer of thermal energy by the circulation or movement of a liquid or gas

A

convection

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15
Q

cool, dense rock from oceanic crust sinks into the mantle; near the core the rock heats up, becomes less dense, and rises

A

convection currents in mantle

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16
Q

carry hot, solid rock of mantle outward, and cooled, solid rock inward in a never-ending cycle

A

convection currents in Earth

17
Q

causes magnetic field

A

convection currents in outer core