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Science Class Vocab

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