Across
- 4. melted rock inside the mantle
- 5. top layer of the earth
- 7. plate boundary when 1 plate goes under another
- 8. waves what causes an earthquake
- 9. out side of the earth
Down
- 1. causing of 2 plate tectonics sliding past each other
- 2. large scale processes effecting the structure of earth's crust
- 3. tectonics a theory explaining the structure of earth's crust
- 6. where do you go to learn about tectonics