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Chapter 12 200069415

QuestionAnswer
The apparent magnitude a star would have if it were 32.6 lights years away from Earth? absolute magnitude
The observed luminosity of a celestial body as observed from Earth? apparent magnitude
A region of space from which no matter or radiation can escape? black hole
States that about 14 billion years ago, the universe began with a huge fiery explosion? big bang theory
massive system of stars,dust,and gas held together by gravity? galaxy?
a large cloud of gas and dust in space? nebula
a star composed primarily of neutron? neutron star
reaction in which two atomic nucli combine to form a nucles with a higher mass? nuclear fusion
the distance light travels in one year? light year
the quanitity of energy in joulas a light sourse emits per second? luminmosity
a star whoes radius is much larger then the suns and appperast red because its cool surface temperature red giant
Created by: 200069415
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