Across
- 2. what causes the plates to move
- 3. upper layer of the earth's mantle
- 7. this type of boundary causes rift valleys
- 9. crust goes under other crust
- 10. this type of boundary causes mountains
Down
- 1. all continents together
- 4. caused by a transform boundary
- 5. the San Andreas fault was caused by this boundary
- 6. the rigid outer part of the earth
- 8. lava comes out the top