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Science > 3.2/3.3 Rocks and Minerals > Flashcards

3.2/3.3 Rocks and Minerals Flashcards

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1
Q

Luster

A

The way a mineral reflects light

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2
Q

Cleavage

A

A mineral’s ability to split easily along flat surfaces.

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3
Q

Naturally Occurring

A

Occurs in nature; not man made

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4
Q

Solid

A

Definite shape and volume

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5
Q

Inorganic

A

Not formed from living things or the remains of living things

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6
Q

Crystal Structure

A

The arrangement of atoms in a orderly and repeating pattern

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7
Q

Fracture

A

The way a mineral looks when it breaks apart in an irregular way

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8
Q

Igneous Rock

A

A type of rock that forms from the cooling of magma or lava

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9
Q

Intrusive Igneous Rock

A

Igneous rock that forms when magma rises up and cools in a place underground; creates large coarse particles because it cools slowly

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10
Q

Extrusive Igneous Rock

A

Igneous rock that forms when lava rises up and cools above the surface; creates small, fine particles because it cools too quickly to get big

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11
Q

Foliated Metamorphic Rock

A

A metamorphic rock with a texture that gives the rock a layered appearance

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12
Q

Definite Chemical Composition

A

Always contains certain elements in definite proportions

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13
Q

Color

A

Outside look of a mineral - not reliable by itself

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14
Q

Streak

A

The color of a mineral’s powder

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15
Q

Density

A

How tightly packed the atoms are

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16
Q

Nonfloated Metamorphic Rock

A

Metamorphic rock that does not exhibit a banded or layered appearance

17
Q

Mohs Hardness Scale

A

A scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals

18
Q

Hardness

A

A measure of how easily a mineral can be scratched

19
Q

Sedimentary rock

A

A type of rock that forms when particles from other rocks or remains are pressed and cemented together

20
Q

Metamorphic rock

A

A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.

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