Across
- 4. where air flows from land to sea at night
- 6. to measure wind speed
- 7. skyd covered by clouds
- 9. used to measure air pressure
- 10. between two air masses cold and the other warm
- 11. changes as pressure changes
Down
- 1. boundary between two air masses
- 2. to measure wind direction
- 3. to measure the amount of rain over a period of time
- 5. water flowing down a mountain
- 8. where air flows from sea to land