Across
- 2. This object is no longer considered to be a planet.
- 4. Jupiter is composed mostly of _________.
- 6. When air in the atmosphere is warmed, air pressure ____.
- 8. The temperature in Earth's _________ is estimated to be as high as 7500 K.
- 9. This object is at the center of the Solar System
Down
- 1. Uranus' blue color is a result of this gas in the atmosphere.
- 3. Earth is the only planet known to support _________.
- 5. Lumps of rocks circling in a broad band between the orbits of Mars and Jupiter.
- 6. The atmosphere of Venus is mostly carbon _________.
- 7. A meteor that is burning up in the Earth's atmosphere is called a __________ star.