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ROCKS & MINERALS--Fill in the blank
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A mixture of different minerals, volcanic glass, organic matter and other materials.
Rock
The hardest mineral in the world
Diamond
A nonliving solid substance that can be described by a chemical formula
Inorganic
Stress that squeezes rocks together and causes them to fold or fracture.
Compression
Rocks buried deep within the earth that change because of heat and pressure
Metamorphic
Rocks formed from hot lava that cools and hardens
Igneous Rock
Not man-made; occurs in nature, and our supply is limited (we can run out of it)
Natural Resource
Rocks formed when sand, dead plants, shells or other organic matter stick together to like glue.
Sedimentary
The ability to resist scratching
Hardness
The tendency of a mineral to break into flat sheets.
Cleavage
Location of the first gold rush in America
North Carolina
The tendency of a mineral to break into jagged, rough, smaller pieces.
Fracture
Which mineral is the hardest of all?
Diamond
The name of the scale used to determine a mineral's hardness
Moh's Hardness Scale
The chalky line left behind when you rub or scrape a mineral against a tile.
Streak
the way a mineral's surface reflects light
luster
Color, luster, streak, hardness, cleavage, and fracture are __ __ that help scientists identify rocks and minerals
Physical Properties
a solid piece of matter with particles arranged in a repeating pattern called a crystal
Mineral
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