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