1. The weather instrument here is used to determine dewpoint and relative humidity. Based on the temperatures shown, the approximate dewpoint temperature and relative humidity are (1) –19°C and 4% (2) –5°C and 25% (3) 8°C and 40% (4) 12°C and 53% 22 o C 14 o C

3. Less Humid More Humid Less Humid More Humid Less Humid

9. Precipitation 3 STEPS TO CLOUD FORMATION

12. THREE BASIC REASONS:

14. This can lead to afternoon thunderstorms.

15. Which sequence of events affecting moist air within Earth’s atmosphere causes cloud formation? (1) rising → expanding → cooling → condensation (2) rising → contracting → warming → evaporation (3) sinking → expanding → warming → condensation (4) sinking → contracting → cooling → evaporation

17. Burj Dubai Tower, Dubai, UAE Taipei 101, Taipei, Taiwan

19. The result is a “rain shadow” caused by mountain ranges.

22. The cross section below shows the direction of air flowing over a mountain. Points A and B are at the same elevation on opposite sides of the mountain. Compared to the air temperature and humidity at point A, the air temperature and humidity at point B are usually (1) cooler and drier (3) warmer and drier (2) cooler and wetter (4) warmer and wetter

24. more dense less dense

25. The storm symbols probably result from (1) Decreasing atmospheric moisture (2) Increasing humidity (3) Higher atmospheric pressure