The study of the earth, moon, and sun
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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| astronomy | The study of the moon, stars, and other objects in space.
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| axis | An imaginary line the passes through earth's center and the north and south poles, about which earth rotates.
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| rotation | The spinning of a planet on its axis.
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| orbit | The path of an object as it revolves around another object in space.
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| calendar | A system of organizing time that defines the beginning, length, and divisions of the year.
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| solstice | The two days of the year on which the sun reaches its greatest distance north or south of the equator.
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| Equinox | The two days of the year on which neither hemisphere is tilted toward or away from the sun.
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| revolution | The movement of an object around another object.
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| force | a push or pull.
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| gravity | Attracts all objects toward each other.
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| Law of Universal Gravitation | Every object in the universe attracts every other object.
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| mass | Amount of matter in an object.
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| weight | Force of gravity on an object.
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| inertia | Tendency of an object to resist change.
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| Newtons First Law of Motion | An object at rest will stay at rest and an object in motion will stay in motion with a constant speed and direction unless acted on by a force.
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| Phases | The different shapes of the moon you see from earth
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| Eclipse | When an object in space comes between the sun and a third object, it casts a shadow on that object.
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| Solar Eclipse | Occurs when a new moon blocks your view of the sun.
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| Umbra | The very darkest part of the moon's shadow.
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| Penumbra | The largest part of the shadow.
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| Lunar Eclipse | Occurs at a full moon when earth is directly between the moon and the sun.
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| Tides | The rise and fall of ocean water that occurs every 12.5 hours or so.
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| Spring Tide | The tide with the greatest difference between consecutive low and high tides.
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| Neap Tide | The tide with the least difference between consecutive low and high tides.
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| Telescope | A device built to observe distant objects by making them appear closer.
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| Maria | Dark flat areas on the moon's surface formed from huge ancient lava flows.
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| Craters | A large round pit caused by the impact of a meteoroid.
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| Meteoroids | A chunk of rock or dust in space.
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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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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:
scottL
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