Across
- 4. earth centered (old view of the solar system
- 6. what are the 4 gas planets called
- 8. sun-centered (modern view of the solar system
- 10. amount of matter in an object
- 11. extremely hot, dense mass of gases
- 13. rocky object that orbits the sun
- 15. small mass of dust and ice that orbits the sun and has a tail
Down
- 1. rocky planets, warmer, close to the sun and each other, smaller
- 2. when we see the glowing path of a meteoroid
- 3. is the force by which a planet or other body draws objects toward its center
- 5. move around the sun
- 7. the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets
- 9. spin on an axis
- 12. measure of the force of gravity on an object
- 14. what has the most gravity in the solar system