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15 Cards in this Set
- Front
- Back
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What are minerals?
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Minerals are solids that occur crystal shaped, natural, non-living, with their own chemical formula. They are pure and the building blocks of rocks.
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What are the properties of minerals?
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The properties of minerals are: hardness, texture, shape and color.
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What is the test called that helps you to discover the unique qualities of the minerals?
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Scratch test ( Mohs hardness scale to assign a number to the hardness)
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Sedimentary
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latin=sediment... rocks are formed when rocks are weathered and eroded into sediment
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What are the 3 main categories of rocks?
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1. sedimentary, 2. igneous, metamorphic
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Weathered
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affected by wind, rain and ice
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eroded
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carried away by rivers or streams
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What acts to mold the sediment into rocks over thousands of years?
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Pressure and cementing
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Example of Sedimentary rock...Limestone
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made from dissolved chemicals and organic sediments
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Sediment
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soil, silt, small rocks, shells, etc...
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Example of Sedimentary Rock...Bituminous Coal
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an organic sedimentary rock formed by compressed peat bog
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Example of Sedimentary Rock...Gypsum
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formed because of evaporating sea water in basins
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Example of Sedimentary Rock....Sandstone
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made of tiny grains of sand
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Igneous Rocks
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ign-latin for fire...rocks are formed from molten rock cooling. Igneous rocks are intrusive or extrusive
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Intrusive rocks(can see with eyes)/extrusive rocks(need a microscope to see)
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cool and harden beneath the surface of the earth(granite,quartz)/cool and harden on the earth's surface(pumice, basalt obsidian)
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