Across
- 2. solid part of upper mantle
- 7. layer of rock which forms the continents
- 8. fluid layer about 2,260 km thick, made of mostly iron and nickel
- 9. waves of energy caused by earthquakes
Down
- 1. a thin layer of crust that overlies the ocean basins
- 3. Outer most shell of a terrestrial planet
- 4. solid outer section of the Earth
- 5. largest layer of earth
- 6. very hot very dense center of our planet