4C & D Flashcards

1
Q

What are the three main layers of the earth?

A

Crust, mantle, and core

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2
Q

True or false: the crust is made of rocks

A

True

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3
Q

Seismic waves move _______ as you go deeper into the crust

A

Faster

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4
Q

The Moho line is located at the _______ of the crust and separates the crust and the mantle

A

Bottom

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5
Q

When the speed of a wave starts to slow, this is called ___________

A

Discontinuity

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6
Q

Do waves speed up or slow down at the Moho line?

A

Slow down

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7
Q

The mantle is of 2 parts: the upper mantle and the _____________.

A

Asthenosphere

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8
Q

The upper mantle moves with the tectonic plates and is made of ________.

A

Rock

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9
Q

The upper mantle and crust combined are called the _____________.

A

Lithosphere

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10
Q

Below the upper mantle is the ______________

A

Asthenosphere

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11
Q

True or false: waves move slower in the asthenosphere

A

True

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12
Q

The asthenosphere is made of _____________ rocks

A

Melting

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13
Q

The mantle takes up _____% of the earth’s volume

A

84

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14
Q

The _______ takes up 15% of the earth’s volume and is located below the mantle

A

Core

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15
Q

True of false: the earth’s core is freezing

A

False, it is extraordinarily hot

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16
Q

The core has 2 parts: the outer part is liquid and the inner part is _______.

A

Solid

17
Q

True or false: seismic waves DO NOT pass through the core

A

True

18
Q

Geologists believe the core is 85% _________.

A

Iron

19
Q

The earth’s ________ field is partially created by the core.

A

Magnetic

20
Q

Any raw material that we use from our environment is a ___________ resource

A

Natural

21
Q

___________ resources have an unlimited supply or are easily replenished

A

Renewable

22
Q

Name 3 renewable resources

A

Water, sunlight, wind

23
Q

Resources like coal and oil that CANNOT be replenished are called __________ resources

A

Nonrenewable

24
Q

The effort to oversee and control the use of natural resources is called _________ ___________. (2 words)

A

Resource management

25
Q

True or false: Resources that are consumed by humans, plants, and animals must be protected from pollutants

A

True

26
Q

_______ waves have to do with earthquakes and sound waves moving through the earth

A

Seismic waves