Across
- 4. Study of planet of earth
- 5. Layer of rock that forms earths outer surface
- 6. Layer of hot solid material between earths crust and core
- 7. Break in earths crust where slabs of rock slip past each other
Down
- 1. A great landmass surrounded by oceans
- 2. Trace of an ancient organism that has been preserved in rock
- 3. material that forms earths hard surface