After reading, studying, and discussing Chapter 16, you should be able to:

• List the processes that cause water to change from one state of matter to another.
• Explain saturation, vapor pressure, mixing ratio, relative humidity, and dew point.
• Describe how relative humidity is determined.
• Explain the basic cloud-forming process.
• List the processes that initiate the vertical movement of air.
• Describe stable and unstable air.
• Discuss the conditions necessary for condensation and cloud formation.
• List the criteria used to classify clouds.
• Describe the formation of fog.
• Discuss the formation and forms of precipitation.

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