unit 3 lesson 1 Word Scramble
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| Question | Answer |
| elliptical A | shaped like a flattened circle |
| geocentric B | having or representing the earth as the center, as in former astronomical systems. |
| gravitational force C | the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface |
| Heliocentric D | having or representing the sun as the center, as in the accepted astronomical model of the solar system. |
| moon E | the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun. |
| orbit F | the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution. |
| Planet G | a celestial body moving in an elliptical orbit around a star. |
| solar system H | the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets. |
| Parallax | an apparent shift in the position of an object when viewed from different locations |
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