Revision

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Across
  1. 1. Tide When ocean levels rise to their highest point.
  2. 5. System The Sun and all the planets and objects that orbit it.
  3. 7. An imaginary line through the center of a planet around which it spins.
  4. 8. Earth's natural satellite that influences tides.
  5. 9. The rise and fall of the ocean’s surface caused by the Moon’s gravity.
Down
  1. 2. A force that pulls objects toward each other, like the Earth and Moon.
  2. 3. The path one object takes around another in space.
  3. 4. A large object that orbits a star, like Earth or Mars.
  4. 5. The star at the center of our Solar System that provides light and heat.
  5. 6. Tide When ocean levels fall to their lowest point.