Unit 8 Vocabulary: Solar Systems, Planets & Gravity Crossword Puzzle

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Across
  1. 3. Something that uses Earth as the reference point
  2. 4. All planets are kept in orbit because of this force
  3. 6. ​A rocky or metallic object that orbits the Sun and is much smaller than a planet
  4. 9. Sun centered
  5. 11. A force of attraction between objects due to their masses
  6. 12. The path that a body follows as it travels around another body in space
Down
  1. 1. ​States that gravitational force increases as the mass of an object increases or the distance between two objects decreases
  2. 2. The envelope of gases surrounding the Earth or another planet
  3. 5. A celestial body similar to a planet but orbiting in a zone that has many other objects in it
  4. 7. One of the highly dense planets nearest to the Sun: Mercury, Venus, Earth, Mars
  5. 8. An object made of rock, ice, dust, and gas that revolves around the Sun
  6. 10. The inward force required to keep a particle or object moving in a circular path