Across
- 4. theory that the continents once formed a single land mass
- 5. boundary where two plates are moving away
- 8. a block of lithosphere
Down
- 1. solid outer layer of earth
- 2. squeezing force
- 3. the layer of rock between the earth's crust and core
- 4. boundary where two plate collide
- 6. areas of crust rising
- 7. central part of earth below the mantle
- 9. stretching force