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Science > Chapter 3 Gr. 6 > Flashcards

Chapter 3 Gr. 6 Flashcards

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0
Q

A break that appears in a boundary between two moving masses of rock

A

Fault

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1
Q

Earthquakes sometimes cause monstrous waves called these

A

Tsunamis

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2
Q

The point underground where an earthquake begins

A

Focus

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3
Q

The place at ground level that is directly above the focus of an earthquake

A

Epicenter

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4
Q

Any trembling or shaking of the Earth’s crust

A

Earthquake

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5
Q

The strength of an earthquake

A

Magnitude

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6
Q

This occurs when natural acid slowly eat into a rock, breaking it apart

A

Chemical weathering

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7
Q

The temperature of rocks does this with depth

A

Increases

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8
Q

This is created when trapped gas is blast through the earths surface

A

Vent

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9
Q

This allows molten rock and hot gases to escape from within the earth

A

A Volcano

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10
Q

Scientists who study the structure of the earth

A

Geologists

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11
Q

The process by which new soil is formed as rocks crumble and break into smaller pieces

A

Weathering

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12
Q

The boundary between the Earth’s crust and it’s mantle

A

Moho or Mohorovičić discontinuity

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13
Q

The underwater mountain ranges

A

Mid-oceanic ridges

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14
Q

The study of earthquakes

A

Seismology

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15
Q

A volcano that has been active at some time in recorded history but has not had a recent eruption

A

Dormant

16
Q

A volcano that produces lava fountains and fire curtains

A

Hawaiian

17
Q

A volcano characterized by hot clouds of gas and dust as it expels

A

Plinian

18
Q

A volcano that has erupted recently

A

Active

19
Q

A volcano that has not erupted in recorded history

A

Extinct

20
Q

Magna that has reached the earths surface

A

Lava

21
Q

Running along the edge of the Pacific ocean, and named for its many volcanoes

A

The Ring if Fire

22
Q

A depression found at the top of a volcano

A

Crater

23
Q

Holes or cracks which serve as escape vents for underground gases

A

Fumaroles

24
Q

Smaller fragments of molten rock that solidify almost instantly

A

Tephra

25
Q

A volcano formed from large amounts of very fluid lava that build up gradually. The Hawaiian Islands were formed by this type of volcano

A

Shield volcano

26
Q

A volcano formed by eruptions of mostly tephra and very little lava. Paracutin is an example of this.

A

Cinder cone volcano

27
Q

A volcano formed by alternating layers of tephra and lava. Mount St. Helens is an example

A

A composite volcano

28
Q

Describe the three main sections of the earth in complete sentences

A

The crust,
the mantle, and
the core

Science (12 decks)

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