The Universe Revision

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Across
  1. 2. The Earth has a tilt and because of this we have ... (S)
  2. 5. The idea that the Earth is the centre of solar system the universe (G)
  3. 6. The largest planet in the solar system (J)
  4. 8. This is the third planet from the sun and has one moon (E)
  5. 9. The force that pulls us down to Earth
  6. 10. A word to describe how much matter you have, it does not change (M)
Down
  1. 1. The idea that the Sun is the centre of the solar system (H)
  2. 3. Used to be the ninth planet in the solar system, now a dwarf planet (P)
  3. 4. A word to describe the force your mass has due to gravity (W)
  4. 7. The name for the different shapes of the moon at night (P)
  5. 10. Is a natural satellite that orbits a planet (M)