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11 terms

science vocab quiz on feb.10

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mineral
a naturally occurring nonliving solid that has a specific chemical makeup and a crystal line of repeating structure.
streak
color of the powder left behind when you rub a mineral against a rough white tile or streak plate.
luster
the way a mineral's surface reflects light.
hardness
a mineral's ability to resist being scratched.
rock
a natural solid made of one or more minerals.
igneous rock
rocks that forms when melted rock cools or hardens.
sedimentary
cemented sediment forms a new type of rock
metamorphic rock
a rock formed when a rock is changed by heat and pressure.
weathering
the process of wearing away rocks by natural process
erosion
the process of wearing away and removing sediment by wind water or ice
rock cycle
the continuous process in which one type of rock changes into another type.