Across
- 2. its two moons are Phobos and Deimos
- 6. The nickname given to the outer planets
- 8. This is a meteoroid that has broken through Earth's atmosphere and will hit the surface of the Earth
- 9. This is the average distance from the sun to the earth (93 million miles)
- 11. A subtype of planet that is not the largest in its orbit
- 15. The movement of one object around another
- 17. A variable that does not change within an experiment
- 18. The variable we measure in an experiment
- 19. Its main moons are Titan, Rhea, Dione, Iapetus, and Tethys
Down
- 1. A small mass of dust, rocks, and ice that travels in an orbit around the sun
- 2. Space rock that is smaller than an asteroid
- 3. This planet's two moons are Titania and Oberon
- 4. This planet's main moon is Triton
- 5. its moons are Ganymede, Io, Callisto, and Europa
- 7. A spherical region of large icy objects that surrounds the solar system
- 10. The movement of an object on a central axis
- 12. Space rocks that orbit the sun in a belt between Mars and Jupiter
- 13. This occurs when a meteoroid enters Earth's atmosphere and burns up in a flash
- 14. the nickname of the inner planets
- 16. The variable we change in an experiment