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Rocks unit 3 > Rocks > Flashcards

Rocks Flashcards

1
Q

What is a soild mass of minerals or mineral like material?

A

Rocks

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2
Q

What does NOT have a crystalline structure?

A

Glass

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3
Q

How many categories of rocks are there?

A

Three

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4
Q

What are the three different types of rocks?

A

Igneous, Sedimentary, and Metamorphic

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5
Q

What summarizes how rocks are formed?

A

The rock cycle

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6
Q

Melted rock underneath the ground is called what?

A

Magma

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7
Q

Magma that reaches the Earth’s surface is called what?

A

Lava

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8
Q

These rocks form from cooled magma

A

Igneous rocks

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9
Q

What is the break down of rocks?

A

Weathering

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10
Q

What are loose bits of weathered rocks?

A

Sediment

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11
Q

These rocks form from weathered, eroded, and deposited sediments

A

Sedimentary rocks

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12
Q

Formed from preexisting rocks that are altered by pressure, heat, and fluids

A

Metamorphic rocks

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13
Q

Igneous rocks are also sometimes called what?

A

Volcanic rocks

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14
Q

What are two types of Igneous rocks?

A

Intrusive and extrusive

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15
Q

Igneous rocks formed from magma beneath Earth’s surface are known as?

A

Intrusive Igneous rocks

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16
Q

Igneous rocks formed from magma above or on Earth’s surface are known as?

A

Extrusive Igneous rocks

17
Q

What two things are used to classify an Igneous rock?

A

Texture and composition

18
Q

A rocks what describes the size, shape, and arrangement of its parts?

A

Texture

19
Q

Geologists estimate that __ to __ percent of the outer 10 miles of the Earth’s crust is either ___ or ___ rock.

A

Geologists estimate that 90 to 95 percent of the outer 10 miles of the Earth’s crust is either Igneous or Metamorphic rock.

20
Q

What is the picking up and carrying away of sediment?

A

Erosion

21
Q

What is the process that squeezes or compacts sediments?

A

Compaction

22
Q

Sedimentary rocks are classified into these three groups:

A

Clastic, Chemical, and Biochemical

23
Q

The agents of Metamorphism are..

A

Temp, pressure, and fluids.

24
Q

Metamorphic rocks are classified as having either..

A

Foilated or non-foilated texture.

25
Q

What takes place when dissolved minerals are deposited in the tiny spaces among the sediments?

A

Cementation

Rocks unit 3 (1 decks)

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