Chapter 2 vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| spectrum | the band of color produced when white light passes through a prism
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| apparent magnitude | the brightness of a star as seen from the Earth
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| absolute magnitude | the brightness that a star would have at a distance of 32.6 light-years from Earth
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| light-year | the distance that light travels in one year; about 9.5 trillion kilometers
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| parallax | an apparent shift in the position of an object when viewed from different locations
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| continous spectrum | shows all colors
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| red giant | a large, reddish star late in its life cycle
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| white dwarf | a small, hot, dim star that is the leftover center of an old star
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| H-R diagram | Hertzsprung-Russell diagram, a graph that shows the relationship between a star's surface temperature and absolute magnitude
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| main sequence | the location of the H-R diagram where most stars lie
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| supernova | a gigantic explosion in which a massive star collapses and throws its outer layers into space
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| neutron star | a star that has collapsed under gravity to the point that the electrons and protons have smaghed together to form neutrons
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| pulsar | a rapidly spinning neutron star that emits rapid pulses of radio and optical energy
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| black hole | an object so massive and dense that even light cannot escape its gravity
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| galaxy | a collection of stars, dust, and gas bound together by gravity
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| nebula | a large cloud of dust and gas
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| globular cluster | a tight group of stars that looks like a ball and contains up to 1 million stars
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| open cluster | a group of stars that are close together relative to surrounding stars
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| quasars | a very luminous, starlike object that generates energy at a high rate; quasars are thought to be the most distant objects in the universe
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| cosmology | the study of hte origin, properties, processes and evolution of the universe
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| big bang theory | the theory that states the universe began with a tremendous explosion 13.7 billion years ago
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
tclendaniel
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