Across
- 2. the ratio between the size of something and a representation of it
- 3. to move gently in small waves
- 6. the force of one thing hitting another
- 7. away from the place sth started
- 8. activity during which a volcano explodes
- 9. a large amount of destruction
- 10. to use a lot of strength to move sth
- 13. the place where two tectonic plates meet
- 14. to destroy
- 16. the rate at which sth moves
- 17. a natural movement of sea water but at great speed
Down
- 1. pieces of the Earth's crust
- 4. of life death
- 5. the place where the sea meets the land
- 8. all the plants and animals that live in an area
- 11. huge piece of land falling away from another piece
- 12. to move smoothly over sth
- 15. a small smooth stone