Plate tectonics

5. a layer of molten iron and nickle that surrounds the inner core of earth
6. the transfer of heat within a material or between materials that are touching
7. a break in the earth's crust where masses of rock slip past each other
9. the layer of hot, solid material between earths crust and core
11. a plate boundary where two plates move toward each other
14. a plate boundary where two plates move away from each other
15. the transfer of heat by movement of a fluid
16. a plate boundary where two plates move past each other in opposite direction
17. a rigid layer made up of the upper most part of the mantle and the crust
19. the name of the single land mass that broke apart 200 million years ago and gave rise to today's continents

1. the movement of a fluid caused by differences in temperature, that transfers heat from one part of the fluid to another
2. the process by which molten material adds new oceanic crust to the ocean floor
3. the layer of rock that forms Earth's outer surface
4. the hypothesis that the continents slowly move across earth's surface
8. a dense sphere of solid iron and nickel at the center of earth
10. a undersea mountain chain where new ocean floor is produced; a divergent plate boundary
12. the region between the inonosphere and the exosphere
13. the process by which oceanic crust sinks beneath a deep-ocean trench and back into the mantle at a convergent plate boundary
18. a section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust
20. the soft layer of mantle on which the lithosphere floats