Across
- 3. largest layer of earth, 1800 miles thick
- 5. Basalt 3-5 miles thick, very dense
- 7. reason that the plates move
- 9. Granite 25 miles thick, less dense
- 10. all rocks and minerals
Down
- 1. upper mantle and crust
- 2. when one plate sinks under another
- 4. when two plates push up and form magma
- 6. when two plates come together
- 8. magma plume rises and burns a hole in plate