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ESB: Ch. 18 Study Guide                 Name: ______________________ Period: _____________________ Date: _________________...
8.   Above the ground, tiny particles called ____________________ serve as surfaces for water vapor condensation.

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Ch. 18 Study Guide 2009


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Ch. 18 Study Guide 2009

  1. 1. ESB: Ch. 18 Study Guide Name: ______________________ Period: _____________________ Date: __________________ Sec 18.1: Water in the Atmosphere Changes of State 1. Select the appropriate letter in the figure that identifies water’s changes of state: _____ sublimation, _____deposition, _____condensation, _____ freezing, _____ evaporation, _____melting 2. Fill in the following table Change Description Latent Heat of State (absorbs, releases) Evaporation Condensation Melting Freezing Sublimation Deposition Humidity: Match _____ Humidity a. A device, consisting of two thermometers, that is used to calculate relative humidity. b. A measure of humidity expressed as a temperature. _____ Relative humidity c. A ratio of air’s water vapor content compared to the amount it could possibly hold. _____ Dew point d. Occurs when air holds all of the water vapor that it could possibly contain at a specific temperature and pressure. _____ Saturation e. The term for water vapor in air. _____ Psychrometer Sec 18.2: Cloud Formation 3. Use the following words to fill in the blanks below: adiabatic cooling, clouds, condense, cools, saturated, warms When air is allowed to expand, it ______________. When air is compressed it ______________. Rising air expands and cools (this is termed ____________________________). When the air reaches its dew point, it becomes ______________ and water droplets ______________ in the air. These masses of water droplets are visible as ______________. Use the figure to answer the following questions: 4. According to the figure, at what altitude does the wet adiabatic rate start? 5. What is the temperature of air near the surface? 6. At what temperature does the air release its moisture as condensation to form clouds? Processes that Lift Air 7. Matching: _____ Orographic lifting a. Differences in reflectivity, e.g., asphalt road versus grassy field, create areas of warmer and cooler air. Rising warm air creates clouds, sinking cool air is clear _____ Frontal Wedging b. Occurs when air comes together after moving from different directions and rises causing _____ Convergence cloud formation cools adiabatically creating clouds and storms c. Warm and cold air masses collide and warm air is forced up over the cooler air. The rising air _____ Localized convective lifting cools adiabatically creating clouds, precipitation, and storms d. When air is forced up the sides of mountains, it rises creating clouds and precipitation
  2. 2. 8. Above the ground, tiny particles called ____________________ serve as surfaces for water vapor condensation. Sec 18.3: Cloud Types and Precipitation Cloud Classification 9. Clouds have ____________________ names and are classified according to their ____________________ and ____________________. 10. Matching: _____ Alto a. High, white, and thin, resemble feathers or cotton candy. Made of ice crystals b. Flat, layered, sheet-like clouds _____ Cirrus c. Prefix for clouds of middle height _____ Cumulus d. Rounded, lumpy cloud masses, resemble cauliflower e. Prefix for clouds that produce precipitation _____ Fog _____ Nimbo _____ Stratus 11. Label the cloud photographs: ____________________ ____________________ ____________________ 12. List five types of precipitation.