S.E.M
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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| Rotation | the action of rotating around an axis or center.
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| Revolution | to go around or movement
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| Orbit | move around the plants
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| Geocentric Theory | a system which puts the Earth in the center of the universe
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| Heliocentric theory | the earth revolves around the sun
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| Astromony | space, and the physical universe as a whole.
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| Solar system | the collection of eight planets and their moons in orbit around the sun
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| Telescope | an optical instrument designed to make distant objects appear nearer
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| Commet | a celestial object consisting of a nucleus of ice and dust
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| Gravity | the force that attracts a body toward the center of the earth
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| Astronomer | an expert in or student of astronomy
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| NASA | The National Aeronautics and Space Administration
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| Axis | an imaginary line about which a body rotates
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| Tilt | move or cause to move into a sloping position
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| Meters | he fundamental unit of length in the metric system
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| Constalation | a group of stars forming a recognizable pattern that is traditionally
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| Vernal Equinox | spring, sun was right at the equator March 21st
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| Autumnal Equinox | fall, Sun is right at the equator september 22nd and 23rd
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| Summer Solstic | summer, the sun is north of the equator at the Tropic of Cancer June 21st
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| Winter Solstic | winter, December 21st the sun is further south at the tropic of capricorn
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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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