Plate Tectonics
Across
- 3. Currents/Heat from the core causes the mantle to move the lithospheric plates
- 4. Hess/An American geologist, who studied mid-ocean ridges.
- 5. of the world's main continuous expanses of land (Africa, Antarctica, Asia, Australia, Europe, North America, South America).
- 6. mantle just below the lithosphere
- 8. have only been found in South America and Africa
- 10. of this tropical tree are found in South America, Africa, India, Australia and Antarctica!
- 12. Wegener/German scientist who proposed (in 1915) that the continents were slowly drifting apart (the theory of continental drift)
- 13. Spreading/The formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges
- 15. Earth's layer between the core and crust of the earth.
- 16. transfers by touching (within a material or between materials)
- 17. transfers through space
- 18. Tectonics/A theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates that move slowly over the underlying mantle.
- 19. Drift/The gradual movement of the continents across the earth's surface through geological time.
Down
- 1. said that all of the continents were once joined together in a supercontinent
- 2. of the Continents/The coastlines of Africa and South America looked like they fit together.
- 3. of this creature are found in Africa and South America
- 7. Evidence/Fossils of the same plants and animals are found today on widely separated continents (including Africa, South America, Antarctica, Australia, and Asia – India)
- 9. scientist who studies the solid and liquid matter that constitutes the Earth as well as the processes and history that have shaped it.
- 11. up of the earth's crust and the upper portion of the mantle
- 14. transfers by movement of currents in liquids and gases; caused by differences in temperature and density
- 16. Evidence/Evidence of glaciers on the equator and tropical forests in the arctic