Across
- 3. the middle of the earth
- 6. to go through a dramatic change
- 8. the state of being stretched tight
- 9. when two plates move away from each other
- 10. the fourth layer of the earth
- 12. a ditch
- 13. the outer part of the earth
Down
- 1. the upper layer of the Earth's mantle
- 2. decrease an object's volume with force
- 4. the layer closest to us on the earth
- 5. fragile
- 7. the third layer of the Earth
- 11. when plates move and collide