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12 Cards in this Set
- Front
- Back
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Producing Power
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Energy
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A system of stars held together by gravitational attraction
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Galaxy
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An arrangement of elements according to there atomic number
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Periodic table of elements
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A luminous point in the night sky
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Star
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A cluster of galaxies
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Supercluster
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A star that increases greatly in brightness because of a catastrophic explosion that ejects most of its mass
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Supernova
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An area in outer space within a dense nebula in which gas and dust are contracting ; creates a new star
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Stellar nuseries
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The force that attracts the body towards the center of earth
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Gravity
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Physical substance
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Matter
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A nuclear reaction in which atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy
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Nuclear fusion
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The quality of being hot; high temperature
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Heat
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A stable subatomic particle occurring in atomic nuclei, with a positive charge
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Proton
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