Across
- 3. Thickest layer of the Earth; it consists of two layers - the lithosphere and the asthenosphere
- 5. The name of the single landmass that broke apart about 225 million years ago
- 7. Alfred Wegener's hypothesis that the continents were once one huge land mass but have since then drifted apart
- 8. the process by which molten material adds new oceanic crust to the ocean floor
- 10. Theory that pieces of the Earth's lithosphere are in motion,driven by convection currents in the mantle
- 11. A plate boundary where two plates grind against each other, moving it different directions
- 12. A plate boundary where two plates move toward each other
Down
- 1. A plate boundary where two plates move away from each other
- 2. The undersea mountain mountain chain where new ocean floor is produced; a divergent plate boundary
- 4. Cause the plates to move; between the lithosphere and the asthenosphere
- 6. plate boundary where two plates
- 9. A layer of molten iron and nickel that surrounds the inner core of the Earth