Ch.19 Vocabulary

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Across
  1. 1. the attractive force between two objects; its magnitude depends on their masses and the distance between them
  2. 3. the darkest part of a shadow
  3. 4. Earth moving around the sun
  4. 5. an imaginary line passing through the North and South poles in the center of the earth\
  5. 6. the blocking of sunlight to Earth that occurs when Earth is directly between the sun and moon.
  6. 10. Earth spins on its axis
  7. 11. the movement of any body around another body
  8. 13. the day of the year that marks the beginning of spring in the Northern Hemisphere
  9. 15. North and South of the equator
  10. 16. slightly flattened oval shape
  11. 17. one of the different shapes of the moon as seen from Earth
Down
  1. 2. the day of the year that marks the beginning of fall in the Northern Hemisphere
  2. 7. the blocking of sunlight to the moon that occurs when Earth is directly between the sun and moon
  3. 8. the two days of the year on which the noon sun is directly overhead at either 23.5 degrees South or 23.5 degrees North
  4. 9. study of the natural objects in space, stars, planets, meteorites, etc.
  5. 12. the part of a shadow surrounding the darkest part
  6. 14. the two days of the year on which neither hemisphere is tilted toward or away from the sun.