Astronomy for Ms. Hall
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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| Who were three of the first early astronomers? | Ptolemy, Copernicus, Tycho Brahe
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| What is a "Light Year"? | A unit of length equal to the distance that light travels in one year
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| What makes up the first stages of a star? | Gas and dust
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| What is it called when when gravity pulls gas and dust together? | A nebula
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| What does Nuclear Fusion combine? | Hydrogen atoms
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| How does a Red Giant "die"? | It burns out like a candle
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| What are two things that may happen to a star that explodes? | Turning into a Super Nova or a Black Hole
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| What does "H-R" Stand for in H-R Diagram? | Hertsprung-Russell
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| What is an H-R Diagram? | A graph that shows the relationship between a star's surface temperature and absolute magnitude
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| What is the Main Sequence? | The diagonal pattern on an H-R diagram where most stars lie
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| What is a Black Hole? | An object that is so massive that even light cannot escap its gravity
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| What is a Galaxy? | A collection of stars, dust and gas held together by gravity
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| What is an example of a spiral galaxy we are familiar with? | The Milky Way
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| What is a massive blob of stars? | Elliptical Galaxies
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| Do irregular galaxies fit into any certain class? | No
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| How long did the Big Bang Theory occur? | 13.7 Billion years ago
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| What makes up comets? | Ice, rock, and cosmic dust that is loosely packed together
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| Are comet tails a solid? | No
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| What makes a comet tail? | The melting of the ice in a comet that gives off gas
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| Do comet tails point towards the sun or away from the sun? | Away
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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.
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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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