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HMS5 Science Unit B

Hubbard Middle School 5th Grade Science Unit B Terms

TermDefinition
constellation A group of stars that form a fixed pattern is the night sky.
axis The imaginary line on which an object rotates.
rotation The spinning of an object on it's axis.
revolution The movement of an object around another object or point.
star A huge globe of gas that shines by it's own light.
planet A large body in space that revolves around a star and dosen't give off it's own light.
refracting telescope An instrument for viewing distant objects that uses 2 lenses to gather light and produce an image.
reflecting telescope An instrument for viewing distant objects that uses a curved mirror at the back of it's tube to gather light and produce an image.
comet A small object in space made of ice dust gas and rock that orbits a star and has a gaseous tail.
meteor A piece of rock or metal thatenters earth's atmosphere.
geocentric model A representation of the uuniverse where stars and planets revolve around earth.
heliocentric model A representation where the earth revolves arond the sun.
Created by: axew274