Across
- 2. this gas gives Uranus and Neptune a bluish color
- 6. the name of the giant, swirling storm in Jupiter's atmosphere that is twice the size of Earth
- 8. gas giant planets are made primarily of hydrogen and ________
- 10. Pluto's orbit is shared with thousands of other objects in the ______ Belt
- 12. Mars has an atmosphere and ice caps made of frozen ______ _______
- 14. Olympus ______ is the largest volcano in the solar system, located on Mars
- 15. Saturn has 7 main _____; they are made of ice and possibly came from a shattered moon
Down
- 1. this planet's 4 largest moons were discovered by Galileo
- 3. term that describes the inner planets made of solid rock and metal
- 4. this planet rotates backwards (east to west) and so slowly that a day here is longer than a year
- 5. Earth is an average distance of 1.00 ____ from the Sun
- 7. the largest moon of Saturn and the only moon in the solar system with a dense atmosphere
- 9. temperatures can range from 450°C to -170°C on this planet because it doesn't have an atmosphere
- 11. this planet's orbit is tilted 90° so it appears to "roll" around the Sun
- 13. Because of it's composition and tilted, crowded orbit, Pluto was reclassified as a _________ planet in 2006