Across
- 3. core is made up of iron & ?
- 4. mantle is rich in ? + magnesium
- 7. lower layer of crust is made up of silica + ?
- 8. outermost layer of earth
- 9. surface of earth made up of solid rock & soil
- 11. innermost layer of earth
- 12. outer core is ?
Down
- 1. upper layer of crust is made up of silica + ?
- 2. continents
- 5. middle layer of earth
- 6. core starts at a ? of 2900 km
- 10. inner core is solid due to heat and ?