Across
- 1. celestial object that orbits a planet
- 4. layer between the crust and the core
- 6. the amount of gravity determines how thick this gas layer will be
- 9. largest terrestrial planet
- 10. metal center of a terrestrial planet
- 12. all terrestrial planets has a surface that is made of this
- 13. center of our solar system
Down
- 2. distance a planet orbits from the sun
- 3. planet whose day is longer than its year
- 5. planet that has the largest core compared to planet size
- 7. planet that has very extreme temperatures both day and night
- 8. the greater the mass of an object the greater its
- 11. other most layer of a terrestrial planet