Earth Material ellen Word Scramble
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| Question | Answer |
| mineral | a naturally occuring, inorganic solid with a definate chemical composition |
| crystal | a solid in which the atoms are arranged in orderly, repeating patterns |
| magma | hot melted rock material |
| silicate | minerals that contain silicon and oxygen and usually one or more elements |
| hardness | the measure of how easily a mineral can be scratched |
| luster | the way minerals reflect light |
| streak | the color of a mineral when it's in powdered form |
| cleavage | minerals that break along smooth flat surfaces have cleavage |
| fracture | minerals that break with uneven rough or jagged surfaces have fracture |
| gem | highly prized minerals that are rare and beautiful |
| ore | a mineral or rock that contains a useful substance that can be mined at a profit |
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