An Introduction to Astrophysics
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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Nuclear fusion | The process by which two or more small nuclei fuse to make a bigger nucleus
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Nuclear fission | The process by which a large nucleus is split into smaller nuclei
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Critical mass | The amount of isotope necessary to sustain a chain reaction
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Absolute magnitude | The brightness of a star,corrected for distance,on a scale of -8 to +19.The smaller the number,the brighter the star
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Apparent magnitude | The brightness of a star as seen in the night sky.The smaller the number,the brighter the star
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Light year | The distance light could travel along a straight line in one year
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Galaxy | A large ensemble of stars,all interacting through the gravitational force and orbiting around a common center
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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:
Makenshi
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