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Rocks and Minerals
chapt. assesment
Term | Definition |
---|---|
igneous rock | rock that forms when melted rock hardens |
luster | how a mineral's surface looks when light reflects from it |
Earth's rock cycle | the pattern of slow changes in rocks from one kind to another |
sedimentary rock | forms when rock pieces deposited over time are squeezed and stuck together |
streak | the color of the powder left behind when you rub a mineral against a white tile |
rock | material made up of one or more minerals |
metamorphic rock | a rock that has been changed by high heat and great pressure |
mineral | a natural solid that has it particles arranged in a crystal pattern |
hardness | a minerals ability to resist being scratched |
weathering | occurs in the formation of rock also cause rocks to be smooth |