Seasons

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Across
  1. 7. an imaginary line that runs around an object that rotates
  2. 9. The act of orbiting
  3. 12. The gravitational pull exerted by a celestial body
  4. 14. when the sun and moon are at right angles to each other
  5. 15. When the sun is EXACTLY above the equator
  6. 16. when the water level is lower than normal.
  7. 18. variations in the surface water level. Also happens twice a day.
Down
  1. 1. Spring and neap is an example of ____ ____.
  2. 2. force, brightness, or a magnetic field
  3. 3. The force that pulls us toward the center of the earth
  4. 4. when the water level is higher than normal
  5. 5. In a _____ the days are longer or shorter than usual
  6. 6. The earth ______ on its axis
  7. 8. when a planet rotates on its axis
  8. 10. an imaginary line around the middle of a planet
  9. 11. difference in height between high and low tide
  10. 13. The large rise and fall of a tide.
  11. 17. The curved path of an object around a star, planet or moon.