THE INTERIOR OF THE EARTH
Across
- 4. THE THICKEST LAYER OF THE EARTH
- 5. THE PROCESS OF LEVELLING OF THE EARTH'S SURFACE
- 6. INNERMOST LAYER OF THE EARTH
- 7. THE LOWER CRUST OF THE EARTH
- 8. UPPERMOST LAYER OF THE EARTH
- 9. A NON-METALLIC MINERAL
- 10. THE CORE MADE UP LARGELY OF NICKEL AND IRON
Down
- 1. THE SEMI-SOLID UPPER LAYER OF THE MANTLE
- 2. RIVER OF ICE
- 3. THE LATIN WORD 'IGNIS' MEANS
- 4. THE MOLTEN ROCK MATERIAL FOUND IN THE LOWER MANTLE