Earth, sun & moon

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Across
  1. 2. When the moon appears to be INCREASING in size, it is in the ___ phase.
  2. 4. It takes Earth 365 days to complete one of these.
  3. 5. The gravity of the moon pulls on Earth's water to create ____.
  4. 7. Earth's tilt results in Earth experiencing this.
  5. 8. When the moon appears to be DECREASING in size, it is in the ____ phase.
Down
  1. 1. Evidence indicates Earth is about 4.5 ____ years old.
  2. 3. It takes Earth 24 hours to complete one of these.
  3. 4. Earth is known as the ___ planet because of its crust and solid surfaces.
  4. 6. This field works together with our atmosphere to protect Earth from harmful solar radiation.
  5. 7. The moon reflects light from this.
  6. 9. An imaginary line on Earth that extends from the north pole to the south pole.