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Across 3. Covers the core 4. Going downward from the Equator 6. Middle of the earth 7. Silica and Magnesium 9. Where we live 11. Longest line of Latitude 12. Irregular slabs of material making up the surface of the earth 15. Greek word meaning building 17. Highest point of latitude 18. Horizontal lines

Down 1. Unit of measurement for latitude 2. Causes the plates to move 5. Silica and Aluminium 8. Earth divided into Northern and Southern............................ 10. Crust under the sea 12. Shortest latitude lines as you go towards the .................................. 13. Crust that continents are made up of 14. Vertical lines 16. Going upward from the Equator