D1: Our Solar System

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Across
  1. 2. The length of time a planet takes to complete one orbit of the Sun.
  2. 4. Zone The distance from a star where the temperature is not too cold, not too hot, but just right for the conditions for life to exist.
  3. 6. The second ice giant and the only planet we cannot see with our eyes.
  4. 7. The path an object takes around another object.
  5. 8. A small red planet that used to have a thicker atmosphere and liquid water, but doesn't anymore.
  6. 10. The length of time a planet takes to complete one spin.
Down
  1. 1. The ‘stuff’ that something is made of, all the matter that makes up that object. Measured in density.
  2. 3. A large, spherical object orbiting a star.
  3. 5. This planet is a gas giant that has had a storm for 300 years.
  4. 8. A large object orbiting a planet.
  5. 9. System A group of objects orbiting around a star.