space vocabulary Alanna Langdon core 1 1/13/15

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Across
  1. 2. the partial or total cover of one object in space by another.
  2. 5. a system for organizing time
  3. 6. top and bottom half of earth from the north and south pole to the equator
  4. 11. the periodic rise and fall of the level of water in the ocean
  5. 12. dark flat areas on the moon [called seas]
  6. 14. attracts all objects toward each other
  7. 17. law where an object will stay in motion or at rest until an outside force acts on it
  8. 20. the force of gravity acting on an object [can change depending on it's location
Down
  1. 1. the degree that earth is tilted on it's axis
  2. 3. law that every object in the universe attracts to each other
  3. 4. an imaginary line that passes through the center of earth and the north and south poles, which the earth rotates
  4. 7. the spinning of the earth on it's axis
  5. 8. the path the earth follows around the sun
  6. 9. the tendency of an object to resist a change in motion
  7. 10. different shapes of the moon
  8. 13. the yearly cycle of winter, summer, spring, and autumn caused by the tilt on earth from it's axis as it revolves around the sun
  9. 15. the study of the moon, stars, and objects in space
  10. 16. the movement of one object around another
  11. 18. a push or pull exerted on an object
  12. 19. the amount of matter in an object