Across
- 2. rocky, outermost layer of earth
- 3. specific type of metal
- 9. amount of mass or substance in a material
- 10. the solid part of earth, including the soil and Earth's rocky center
- 11. outer part of Earth's magnetic field
- 12. liquid water on earth
- 13. core Earth's dense, metallic center
- 14. frozen water on earth
Down
- 1. force of attraction between every object and every other object that exists because of mass
- 4. rigid layer that includes the crust and uppermost mantle
- 5. all living organisms on earth
- 6. thick middle layer in the solid part of earth
- 7. plastic, flowing layer within the mantle
- 8. layer of gasses surrounding earth
- 15. a shape like a ball