Plate Tectonics
Across
- 2. the soft layer of the mantle on which the lithosphere floats
- 5. /the transfer of heat by movements of a heated fluid.
- 7. a trace of an ancient organism that has been preserved in rock
- 8. the amount of mass in a given space; mass per unit volume
Down
- 1. a break in Earth’s crust where slabs of rock slip past each other
- 3. a device that determines the distance of an object under water by recording echoes of sound waves
- 4. the material that forms Earth’s hard surface.
- 6. a section of the lithosphere that slowly moves over the asthenosphere carrying pieces of continental and oceanic crust