Rocks and Minerals Vocabulary

Front

Hardness

Back

A measure of how easily a mineral can be scratched.

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Luster

Back

The way a mineral shines, or reflects light.

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What is a Mineral?

Back

A nonliving solid material that has a definite chemical make up and is found in Earth's outermost layer.

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What is a Streak?

Back

The color of a mineral when it is ground into a powder.

Front

Another way to test hardness is...

Back

Moh's scale

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What is an igneous rock?

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Rock that forms when melted, or molten rock from deep below Earth's surface cools and hardens.

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Metamorphic rock

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Rock that forms when existing rocks are changed by heat, pressure, or chemicals beneath the Earth's surface.

Front

What is a rock?

Back

A solid material made up of one or more minerals.

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This rock was found near the mouth of a volcano. What type of rock is this? Options: Sedimentary, Igneous, Metamorphic

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Igneous

Front

This rock was molten lava that cooled quickly as it came out of a volcano. What type of rock is this? Options: Sedimentary, Igneous, Metamorphic

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Igneous