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Science Class Vocab

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Across
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Shiny element which is solid at room temperature, conducts heat well, and is more flexible than other solids
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How closely packed the molecules are in something
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An instrument that breaks light into a spectrum so it can be recorded
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A famous comet which takes about 77 years to orbit our sun
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A rigid bar that pivots about one point and that is used to move an object at a second point by a force applied at a third
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The smaller glowing area within a comet, made of rock, ice and frozen gas
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A type of rock created under heat & pressure; rocks made from cooled magma
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The part of a comet made of ionized gas pushed away by solar wind; looks like a 'bluish' thin straight line away from the sun
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A type of rock created by layers of particles moved by water, ice & wind; often formed by the weathering and erosion of older rocks
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Used to test for starch in food, specifically amylose
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An ancient military engine for hurling stones, arrows, etc.
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A hollow stone lined with crystals inside, formed when mineral-rich water in a cavity of rock experiences a sudden change of pressure or temperature
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Small chunks of iron and rock that break away from asteroids that are in space; most of these burn up before reaching Earth's surface
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The quantity of matter as determined from its weight or from Newton's second law of motion
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Molten rock that has come out of a volcano
Down
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The naturally occurring elements that rocks are made out of; usually crystals, like salt or diamonds
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Something to be borne or conveyed; weight
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How much liquid an object will displace
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A type of rock that was once another type of rock but has changed due to intense heat & pressure
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Acronym for 'light emitting diode'
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A meteor which has landed and been found on Earth's surface
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The chemical bonds that hold amino acids together
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Any remains, impression, or trace of a living thing of a former geologic age, as a skeleton, footprint, etc.; often found in sedimentary rock
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Molten rock under the surface of the earth
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The building blocks that proteins are made out of
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The support, or point of rest, on which a lever turns in moving a body
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How much space an object takes up
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Meteoroids that fall through the sky like streaks of light; also called 'shooting stars'
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Acronym for 'light amplification by stimulated emission of radiation'
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The glowing head of a comet, formed as the Sun vaporizes the frozen gas