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SCIENCE TEST 11/13

QuestionAnswer
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
Created by: 100000787984070
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