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Ch8 Stars, Galaxies,
Stars, Galaxies, and the Universe
| Question | Answer |
|---|---|
| the band of color produced when white light passes through a prism is a | spectrum |
| the brightness of a star as seen from the Earth is the | apparent magnitude |
| the brightness a star would have at a distance of 32.6 light-years from Earth is the | absolute magnitude |
| the distance light can travel in one year is 9.5 trillion kilometers and is called a | light-year |
| an apparent shift in the position of an object when viewed from different locations is called | parallax |
| a large reddish star late in its life cycle that expands and cools once it uses all of its hydrogen is a | red giant |
| a small, hot, dim star that is the leftover of an old star is a | white dwarf |
| a graph that shows the relationship between a star's surface temperature and absolute magnitude is called a | H-R diagram |
| the location on the H-R diagram where most stars lie is the | main sequence |
| a gigantic explosion in which a massive star collapses and throws its outer layers into space is called a | supernova |
| a star that has collapsed under gravity to the point that the electrons and protons have smashed together to form neutrons is a | neutron star |
| a rapidly spinning neutron star that emits rapid pulses of radio and optical energy is a | pulsar |
| an object so massive and dense that even light cannot escape its gravity is called a | black hole |
| a collection of stars, dust, and gas bound together by gravity is a | galaxy |
| a large cloud of dust and gas in interstellar space; a region in space where stars are born or where stars explode at the end of their lives is a | nebula |
| a tight group of stars that looks like a ball and contains up to 1 million stars is a | globular cluster |
| a group of stars that are close together relative to surrounding stars is an | open cluster |
| a very luminous, starlike object that generates energy at a high rate; thought to be the most distant objects in the universe | quasar |
Created by:
Giannola
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