Across
- 4. tectonic plates are constantly ______
- 5. plates move away from each other at this boundary
- 7. a type of tectonic landform
- 8. a type of tectonic phenomena
Down
- 1. contains the crust and uppermost mantle
- 2. occurs in between core and crust
- 3. plates move away from each other at this boundary
- 6. number of layers in Earth's structure