Across
- 4. an extinct reptile that lived 300 million years ago
- 5. a long narrow and deep indentation in the ocean floor
- 9. an underwater mountain range formed when two plates move apart
- 10. evidence of past life
- 12. moving toward each other
- 13. hot liquid rock inside the earth's crust
Down
- 1. a large solid piece of rock that floats on the mantle
- 2. a diagram that shows the inside of an object
- 3. a layer of soft rock under the surface of a planet
- 6. moving away from each other
- 7. a major land mass
- 8. a natural spring that shoots hot water into the air
- 11. hot liquid rock outside of earths surface