science review – Flashcards
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comet
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composed of dust, rock particles, and frozen water and gases
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coma
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cloud of vaporized gases around a comet's nucleus
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oort
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name of cloud that contains many comets outside of the solar system
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meteoroids
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small pieces of rock from broken-up comets moving through space
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meteor
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meteoroid that burns up in Earth's atmosphere
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Ceres
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largest asteroid in the asteroid belt
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meteorite
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meteoroid that strikes Earth
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belt
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area between Mars and Jupiter where many asteroids are located
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asteroid
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piece of rock similar to material that formed into planets
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shower
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group of meteors
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tail
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part of comet that always points away from the Sun
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Copernicus
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proposed the sun-centered model of the solar system
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elliptical
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the shape of the planets' orbits
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Kepler
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determined the shape of the planets' orbits
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fusion
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process involved in forming the Sun
