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Rocks and Minerals

review for Texas 6th grade science

TermDefinition
melting changing from a solid to a liquid
weathering breaking down of rocks into small pieces
cooling changing from a liquid to a solid
metamorphic rock igneous or sedimentary rock that has been exposed to heat and pressure; creates either new minerals or new mineral patterns
igneous rock rock formed from cooling of magma (lava); slow cooling makes big crystals, quick cooling makes large crystals
sedimentary rock formed from the compacting and cementing of sediment and organic debris; fossils are found in this type of rock
magma melted rock that is found under the surface of the Earth
sediment bits of broken rock
erosion the movement of sediment from one location to another
deposition the dropping of sediment in a new location
lava melted rock that is found on the surface of the Earth
heat high temperatures
pressure force acting on matter
mineral the basic building block of geology
SNIFE way to remember the five conditions a mineral must have: solid, naturally occurring, inorganic, fixed crystalline structure; element or compound
extrusive above the ground; cool quickly; have small or no visible crystals
intrusive inside the ground; cool slowly; have large crystals
MOHS Hardness Scale a ranking of minerals from 1 to 10; Talc is the softest - 1; diamond is the hardest - 10
cementing process that sticks sediments together; think glue
compacting process that squeezes sediments together
Created by: bwilliamsscience
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