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