Plate Tectonics
Across
- 2. __________ currents cause plates to move
- 4. where plates slide next to each other
- 7. where plates move away from each other
- 9. where plates collide
Down
- 1. Henry Hess' theory
- 3. Alfred Wegener's theory
- 5. famous fault like in California
- 6. convergent plates form these
- 8. when denser plates go under less dense plates