Across
- 5. Landmass that is believed to have once been the only continent on earth surrounded by water
- 8. How fast (in centimetres) continents move per year
- 9. the uppermost layer of the earth, it is brittle and lightweight
- 11. invented the continental drift theory
- 13. layer of the earth that is approximate to the temperature of the sun
- 15. move along the earth's surface
- 16. mass per unit volume
- 17. heat transferred by contact
- 19. some of the oceanic crust will melt along with the sediments. As the plates come together water fills the empty space
- 21. Plates that move towards each other
- 22. Section of the Mantle that is hotter than the Asthenosphere
Down
- 1. less dramatic but are useful in analyzing Earth's interior structure
- 2. Plates that move apart
- 3. Consists of 68% of the mass of the earth
- 4. Ocean located left of California and Chile
- 6. one of the surface exresssions of plumes of magma rising from relatively stationery sources of heat in the mantle
- 7. form when divergent plates spilt
- 10. 7 landmasses located around the world
- 12. loss of energy through radiation
- 14. the ability of an object to float in a fluid by displacing a volume of that fluid equal in weight to the floating object's own weight
- 18. largest known plume
- 20. heat transferred without contact