Day and Night

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Across
  1. 2. The third planet from the Sun.
  2. 4. The spinning motion of Earth on its axis.
  3. 6. The celestial body that provides light and heat to Earth.
  4. 7. Period of light in a 24-hour cycle.
  5. 8. The cycle of changes in weather patterns due to Earth's tilt.
  6. 9. The time it takes for Earth to orbit the Sun once.
Down
  1. 1. A large body in space that orbits a star.
  2. 3. The natural satellite that orbits Earth.
  3. 5. The period of darkness in a 24-hour cycle.
  4. 6. system that includes the Sun and all celestial bodies orbiting it.