Across
- 1. Force of attraction between every object and every other object that exists because of mass
- 2. Thick middle layer in the solid part of Earth
- 4. Rocky, outermost layer of Earth
- 5. Liquid water on Earth
- 8. Layer of gases surrounding Earth
- 10. A shape like a ball
- 11. Plastic, flowing layer within the mantle
- 12. Earth's dense, metallic center
- 13. Rigid layer that includes the crust and uppermost mantle
Down
- 1. The solid part of Earth, including the soil and Earth's rocky center
- 2. Outer part of Earth's magnetic field
- 3. Specific type of metal
- 6. All living organisms on Earth
- 7. Frozen water on Earth
- 9. Amount of mass, or substance, in a material