Across
- 1. What we walk one;solid rock
- 3. part of the mantle; looks like crust
- 6. Example: How heat is transmitted
- 7. mass of a unit volume
- 8. 2/3 the mass of earth
- 9. smallest unit of matter
Down
- 2. Example: the sun
- 4. tectonics massive; causes continents to move
- 5. densest layer of earth
- 6. Example: when you're boiling water