Across
- 4. When boundaries move away from each other.
- 7. Greek meaning "devoid of force"
- 9. Scottish geologist who proposed about convection currents
- 10. When boundaries movie past each other.
Down
- 1. When boundaries move towards each other.
- 2. German meteorologist
- 3. Greek meaning "stone"
- 5. Made up of the crust, mantle, core.
- 6. Known as the Supercontinent
- 8. The thinnest layer of the earth.