Across
- 2. had once been joined
- 5. when the oceanic plate goes underneath the continental creating volcanoes
- 8. where two boundary are moving towards each other
- 9. The first name of the scientist who came up with the theory of plate tectonics.
Down
- 1. where plates slide apart from each other
- 3. the upper mantle
- 4. is broken into 8 major plates
- 6. that move slowly over the lower mantle
- 7. where plates slide past each other