Cloud Formation, Humidity and Lapse Rates Quiz

What process describes the rising and expanding of a parcel of air due to heating?

• Evaporation

• Radiation

• Conduction

• Convection

What happens to the pressure and temperature of an air parcel during adiabatic expansion?

• Pressure and temperature both increase

• Pressure decreases and temperature increases

• Pressure increases and temperature decreases

• Pressure and temperature both decrease

What is the term for the total amount of water vapor a parcel of air can hold?

• Relative Humidity

• Absolute Humidity

• Saturation Point

• Dew Point

What is the relative humidity if a parcel of air at 30 degrees holds 15 grams of water vapor?

• 50%

• 100%

• 75%

• 25%

What is the environmental lapse rate?

• Temperature decrease of 10 degrees Celsius per 1000 meters

• Temperature decrease of 6.5 degrees Celsius per 1000 meters

• Temperature increase of 10 degrees Celsius per 1000 meters

• Temperature increase of 6.5 degrees Celsius per 1000 meters

What is the dry adiabatic lapse rate?

• 5 degrees Celsius per 1000 meters

• 6.5 degrees Celsius per 1000 meters

• 7 degrees Celsius per 1000 meters

• 10 degrees Celsius per 1000 meters

At what point does a parcel of air become saturated?

• When it reaches 50% relative humidity

• When it reaches 75% relative humidity

• When it reaches 100% relative humidity

• When it reaches 25% relative humidity

What is the saturated adiabatic lapse rate?

• 10 degrees Celsius per 1000 meters

• 7 degrees Celsius per 1000 meters

• 6.5 degrees Celsius per 1000 meters

• 5 degrees Celsius per 1000 meters

What is the dew point?

• The temperature at which air pressure is lowest

• The temperature at which air pressure is highest

• The temperature at which air becomes unsaturated

• The temperature at which air becomes saturated

What is absolute instability?

• When the air parcel is at the dew point

• When the air parcel is at the same temperature as the surrounding air

• When the air parcel is warmer than the surrounding air

• When the air parcel is cooler than the surrounding air