Astronomy 8th
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| Rotation | Spinning of the Earth on its axis.
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| Axis | Imaginary line that passes through the Earth's center.
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| Umbra | Darkest part of the moon's shadow.
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| Penumbra | The larger part of the shadow.
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| Revolution | The movement of one object around another.
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| Lunar Eclipse | Occurs at full moon, when the Earth is directly between the moon and sun.
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| Orbit | The path the Earth follows as it revolves around the sun.
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| Total Lunar Eclipse | When the moon is in the Earth's umbra.
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| Calendar | A system of organizing time, that defines the beginning, length and divisions of a year.
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| Solstice | When the sun reaches its greatest distance north and south of the equator twice each year.
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| Partial Lunar Eclipse | Occurs when the moon passes partly into the umbra of the earth's shadow.
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| Equinox | Halfway between the solstice, when neither hemisphere is tilted toward or away from the sun.
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| Tide | the rise and fall of ocean water
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| force | a push or pull
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| spring tide | a tide with the greatest difference between consecutive high and low tides
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| gravity | the attractive force between objects
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| neap tide | a tide with the least difference between consecutive high and low tides.
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| newton's law of universal gravititaion | states that every oject in the universe attracts every other object
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| telescope | a device built to look at distant objects by making them appear closer
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| mass | amount of matter in an object
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| maria | the dark, flat surfaces of the moon
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| weight | force of gravity on an object
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| craters | large, round pits in the moon's surface
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| inertia | when an object resists a change in motion
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| highlands | mountains which cast dark shadows due to its peaks and the rim of the craters
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| newton's first law of motion | and 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 seen from earth.
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| eclipse | when an object in space comes between the sun and a third object. it puts a shadow on that object.
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| rocket | a device that releases gas in one direction and moves in the opposite
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| apollo program | the american effort to land a man on the moon
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| thrust | the reaction force that propels a rocket forward
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| neil armstrong and buzz aldrin | both entered a tiny spacecraft called the eagle
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| velocity | speed in a given reaction
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| moonquakes | caused apollo astronauts to crash equipment on the moon's surface
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| orbital velocity | required of a rocket to start an orbit around the earth
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| space shuttle | a spacecraft that can carry a crew into space, return to earth and then be reused for the same purpose
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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:
lia ashley
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