Earth Motion Through Space-Clark

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Across
  1. 3. The time when a hemisphere experiences its longest or shortest day of the year.
  2. 6. The path an object follows as it moves around another object in space.
  3. 8. An imaginary line that passes through Earth from the North Pole to the South Pole.
  4. 9. The movement of Earth around the sun.
  5. 10. The four periods of the year caused by Earth's tilt and revolution around the Sun.
Down
  1. 1. The time when daytime and nighttime are nearly equal in length.
  2. 2. The spinning of Earth on its axis.
  3. 4. An oval-shaped path, like Earth's orbit around the Sun.
  4. 5. The force that pulls objects toward each other.
  5. 7. The angle of Earth's axis, about 23.5 degrees, which helps cause the seasons.