Plate Tectonics

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.

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