Humidity & Clouds

The phase change from water vapor to liquid water is known as

• evaporation
• precipitation
• condensation
• sublimation

Latent heat is

• energy stored by ozone molecules
• hidden amounts of solar radiation
• energy given off by plants, volcanoes, or fires
• energy released or absorbed by H₂O

Water vapor capacity  is best described as

• maximum water vapor that evaporates at a specific temperature
• the ratio of water vapor to water vapor at saturation
• the amount of water vapor in the atmosphere right now
• how much liquid water Lake St. Clair can hold

Dew Point is the

• temperature air cools down to reach condensation
• temperature where ice melts to liquid water
• temperature where ice turns directly into water vapor
• time of day when dew on the ground disappears

Dew is most likely to form 

• after heavy rain on a humid day
• when humid air contacts cold ground
• when the snow on the ground melts
• during windy nights when it rains

During which part of the water cycle does a cloud form?

• Evaporation
• Precipitation
• condensation
• Run off

As the air temperature increases, the air's capacity for water vapor: 

• increases
• decreases
• remains the same
• is unrelated to air temperature and can either increase or decrease

Estimate the relative humidity (%) if the air temperature is 23 degrees C and the humidity is 15g. (USE YOUR BLUE HUMIDITY GRAPH)

• 15%
• 23%
• 75%
• 100%

Estimate the relative humidity (%) if the air temperature DROPS TO 18 degrees C and the humidity stays at  15g. (USE YOUR BLUE HUMIDITY GRAPH)

• 15%
• 18%
• 75%
• 100%

A dry-bulb temperature of 30°C and a wet-bulb temperature of 29°C were recorded at a weather station. What are the relative humidity and the most likely weather conditions? (use your dry-bulb-wet bulb chart)

• Relative humidity is 29% with clear skies
•  Relative humidity is 29% with a good chance of snow
• Relative humidity is 93% with clear skies.
•  Relative humidity is 93% with a good chance of rain.