Solar System

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Across
  1. 1. Jupiter, Saturn, Uranus and Neptune are all made of...
  2. 3. A large ball of gas or rock orbiting a star in space.
  3. 5. The largest planet in our solar system.
  4. 7. You can often identify a comet because it has a ...
  5. 8. The closest planet to the sun.
  6. 12. What is found between Jupiter and Mars?
  7. 14. They orbit the sun, but have very long elliptical orbits. Made of rock and ice.
Down
  1. 1. The more massive an object in space is the more ... it will produce.
  2. 2. A massive ball of gas burning at the centre of the solar system. Our sun is an example of one.
  3. 4. These are small rocks that burn up as they enter a planet's atmosphere. We sometimes call them shooting stars.
  4. 6. An example of a dwarf planet.
  5. 9. What bit of evidence tells us that the universe is expanding?
  6. 10. These objects orbit planets. They are natural satellites.
  7. 11. The sun is a source of light and ...
  8. 13. Mercury, Venus, Earth and Mars are all examples of what kind of planet?