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SCIENCE TEST 11/13
| Question | Answer |
|---|---|
| what are minerals? | inorganic solid material with a particular chemical makeup and orderly arrangement of atoms |
| rocks are composed of two or more | minerals |
| magma | minerals form from blank or lava or through evaporation or precipitation |
| size | mineral formation includes blank and how mineral crystals fit together |
| properties | characteristics used to identify minerals |
| crystals | solid materials with a repeating pattern of atoms |
| cleavage and fracture | some minerals have blank splitting into thin sheets; other minerals have blank, breaking into rough edges |
| streak | color or color of a powered mineral helps identify minerals |
| luster | describes how light reflects from a minerals surface |
| hardness | Mohs scale uses this to classifyminerals from 1 softest to 10 hardest |
| specific gravity | compares weight of mineral with weight of an equal volume of water |
| magnetism | other properties of minerals include blank, double refraction, taste, or reactions with acid |
| common minerals | most rock forming minerals are silicates or carbonates |
| gem | rare minerals that can be cut and polished |
| pressure | diamonds are produced under blank beneath earths surface and brought to the surface by special volcanic eruptions |
| ore | CONTAINS enough useful mineral to be sold at a profit |
| processed | ores must be this to extract the mineral |
| igneous rocks | form from melted rock that cools |
| extrusive | igneous rocks that form when melted rock cools on earths surface |
| intrusive | igneous rocks that form when melted rock cools beneath earths surface |
| granitic | light colored often intrusive igneous rocks containing a high percentage of silica |
| basalt | dark colored often extrusive igneous rocks containing iron, magnesium, or calicium |
| lava | melted rock that reaches earths surface and forms extrusive igneous rock when it cools |
| volcanoes | can erupt bringing a lava flow to earths surface |
| fishers | large cracks can allow melted rock to ooze out in a lava flow |
| magma | melted rock that does not reach earths surface; intrusive igneous rocks form as magma slowly cools under the surface |
| crystal size | MAIN DIFFERENCE BETWEEN intrusive and extrusive igneous rock |
| intrusive | igneous rocks that have large crystals |
| extrusive | IGNEOUS ROCKS THAT do not have large crystals |
| sedimentary | rocks form in layers from broken rock, shells, plants, and other materials |
| detrital | rocks made of grains from minerals or other rocks that have been compressed |
| chemical | rocks form when mineral rich water evaporates and from other blank processes |
| organic | rocks form from dead pants and animals that have been compressed |
| coal | rock that is produced from layers of plants |
| fossils | chalk is a kind of limestone made from this of tiny animals and algae |
| pressure | time, blank, and heat, and events such as erosion and moving land masses, make new rocks out of old rocka |
| metamorphic rock | form when existing rocks are heated or squeezed; they recrystallize and might change chemically |
| fiolated | rocks having visible layers or elongated mineral grains |
| non fiolated | rocks do not have layers or bands |
| rock cycle | rocks change from one type to another over millions of years |
| diagram | or model shows each rock on a continuing journey |
| any | a rock in blank part of the cycle could become any other kind of rock |
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100000787984070
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