Across
- 1. Numbers on a thermometer
- 5. They are made of water drops or ice crystals
- 8. A unit of air pressure
- 10. A layer made when water vapour turns into ice
- 11. Rain, snow and hail
- 14. A colourful arc in the sky
- 15. Used to measure air pressure
- 17. Moving air
Down
- 2. When water vapour changes into liquid
- 3. Used to measure temperature
- 4. The time when the Sun is highest in the sky
- 6. A short drop in air temperature to about −3°C
- 7. When water changes from liquid to gas
- 9. A layer made when water drops freeze into ice
- 12. A cloud close to the ground
- 13. Things that happen in the air around the Earth
- 16. Dew, frost and rime