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| An object that moves around another object in space. |
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| Earth is a satellite of the ___________. |
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| As the moon moves around earth, different amounts of its lighted side are visible. That's why the moon seems to have different shapes or ______. |
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| It takes a little more than _____ days for the moon to complete its orbit around Earth. |
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| During phases 1 - 5, when the lighted area of the moon is increasing from left to right, the moon is said to be |
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| During phases 5 - 8, when the amount of light area decreases from right to left, the moon is said to be |
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| The lit part of the moon is not visible from the Earth during the |
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| The movement of Earth around the sun is called its |
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| The Earth takes _____ days to complete a revolution. |
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| As Earth revoves around the sun, it is also spinning around an imaginary line the runs through the center of Earth from the North Pole to the South Pole called the |
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| For Earth to complete one rotaion on its axis, it takes |
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| The rotation of Earth on its axis causes |
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| Earth's axis is tilted, which causes |
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| The sun, a ball of burning gas in the center of our solar system, is a |
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| When the moon blocks the sun's rays from reaching the Earth, it is called a |
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| When the Earth blocks the sun's rays from reaching the moon, it is called a |
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| A large object that moves around a star is called a |
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| A device people use to observe distant objects |
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| Vihicles that carry cameras, instruments, and other tools are called |
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| A research facility being assembled in space is called the |
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| International Space Station |
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