Chapters 4 thru 8 Flashcards

1
Q

What are the three primary components of magma?

A

Magmas consist of three materials:
- melt (liquid component)
- crystals of silicate minerals (solid component)
- volatiles (gas component)

Molten rock when cooled solidifies into igneous rock

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2
Q

What are the four basic igneous compositions?

A

Felsic
Intermediate
Mafic
Ultramafic

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3
Q

What are the six major igneous textures?

A
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4
Q

What are the major processes that generate magma from solid rock?

A
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5
Q

How does magmatic differentiation generate a magma body with different chemical composition from its parent magma?

A
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6
Q

How does partial melting of the mantle rock peridotite generate a mafic (basaltic) magma?

A
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7
Q

What are the five intrusive igneous structures?

A

Dikes
Sills
Batholiths
Stocks
Laccoliths

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8
Q

What is Geothermal energy?

A

Heat capture from Earth in the form of hot water or steam that is used to produce electricity.

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9
Q

What is the source of geothermal energy?

A

Hot igneous rocks below the surface of Earth’s crust.

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10
Q

Which is a renewable energy that is less polluting?

Geothermal
Fossil fuel-derived

A

Geothermal

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11
Q

Name a volcano that is comprised of igneous rock?

A

Mount Rainier

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12
Q

Igneous rocks are a major constituent of Earth’s?

A

Crust and Mantle

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13
Q
A
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