Across
- 5. pressure, cloudy,
- 6. measure,
- 8. surface, nearest,
- 10. altitude temp, distinguish layers,
- 12. inside of the earth,
- 14. boundaries, move apart,
- 17. mid-ocean ridge, underwater chain,
- 18. law, A pattern in nature,
- 19. energy release,
- 20. the process of liquid changing,
- 21. from oceans and lakes, water,
Down
- 1. drift Slowly moved,
- 2. freezes,
- 3. fresh water,
- 4. humidity, the measure of the amount,
- 7. highest concentration,
- 9. normal reverse, movement of two blocks,
- 11. water carbon dioxide.
- 13. and record, an examination,
- 15. 7 steps of
- 16. waves, the first to reach,
- 19. cold and warm,