Atmospheric Variables

What phases change occurs that causes clouds to form?

• evaporation

• transpiration

• condensation

• precipitation

By which process does more water vapor enter the atmosphere?

• evaporation from lakes and rivers

• evapotranspiration from land areas

• sublimation from polar ice and snow

• evaporation from ocean surfaces

At which temperature could water in the atmosphere change directly into solid ice crystals?

• 20 F

• 40 F

• 30 C

• 20 C

A student used a sling psychrometer to

measure the humidity of the air. If the

relative humidity was 65% and the dry-

bulb temperature was 10 C, what was

the wet-bulb temperature?

• 3 C

• 5 C

• 7 C

• 10 C

According to the ESRT 29.53 inches is equal to how many millibars of pressure?

• 1003

• 999

• 1000

• 997

A weather map of New York State shows isobars that are close together, indicating a steep pressure gradient. Which weather condition is most likely present?

• strong winds

• dry air

• low visibility

• low temperatures

Which weather change is most likely indicated by rapidly falling air pressure (barometer is dropping)

• A storm is coming

• A rainbow

• Clear skies

• Cloudy with a chance of meatballs

Which graph best represents the relationship between water droplet size and the chance of precipitation?

• 
• 
• 
• 

Under which conditions is a cloud most likely to form at the earths surface

• When there is low relative humidity

• When the dew point temperature is close to the air temperature

• When the dew point temperature is far from the air temperature

A diagram of the water cycle is shown. Which letter shows the process of transpiration?

• A

• B

• C

• D