Across
- 3. A solid ball of iron and nickel
- 5. The mostly-solid bulk of Earth's interior
- 6. the third planet from the sun
- 8. the intense heat that causes rocks to rise and fall
- 9. A sudden and violent shaking of the ground
Down
- 1. A molten state of Earth
- 2. Waves that travel through Earth
- 4. a sheet,quantity,or thickness of material
- 7. the degree of compactness of a substance
- 8. Earth's outer layer