Vocabulary Chapter 8 Section 2
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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galaxy | a giant structure that contains dust, gases, and hundreds of billions of stars
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universe | all of space and everything in it
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light - year | the distance that light travels in one year
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parallax | the apparent change in position of an object when seen from different places
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giant star | a very large star, much larger than the sun
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apparent magnitude | the brightness of a star as seen from Earth
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absolute magnitude | the brightness of a star if it were a standard distance from Earth
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Hertzsprung-Russell diagram | a graph relating the temperature and brightness of stars
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main sequence | an area on the Hertzsprung-Russell diagram that runs from the upper left to the lower right and includes more than 90% of all stars
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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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