Across
- 2. the ocean floor.
- 4. mostly made of iron.
- 6. The thinnest layer of the earth.
- 8. Convection currents in the _____ drive plate tectonics.
- 9. rigid, rocky outer layer of the Earth.
- 10. has a liquid part and a solid part.
Down
- 1. is about 4000-5000 degrees Celsius.
- 3. between the thermosphere and the stratosphere.
- 5. puddy like.
- 7. makes up our continents.