Universe
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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Universe | Space and all the matter and energy in it.
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Light-Year | The distant that travels in one year; About 9.46 trillion kilometers.
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Solar System | The sun and all of the planets and other bodies that travel around it.
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Galaxy | A collection of stars,dust and gas bound together by gravity.
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Planet | A relatively large spherical body that obits a star.
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Star | A large celestial body that is composed of gas and that emits light; The sun is a typical star.
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Astronomical-Unit | A large distance between Earth and sun; Approximately 150 million kilometers symbol,AU
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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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