Dew Point and Relative Humidity

Dew Point is the

• temperature air cools down to reach condensation (or turn into a liquid)

• temperature where ice melts to liquid water

• temperature where ice turns directly into water vapor

• time of day when dew on the ground disappears

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

If the air is "saturated", that means:

• the air is full of water

• the air is partially full of water

• it's amount of water vapor in the atmosphere right now

• how much liquid water it potentially can hold

Tags

NGSS.MS-ESS2-5

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

Tags

NGSS.MS-ESS2-4

The name for the process in which water vapor changes back into a liquid is

• Evaporation

• Condensation

• Sublimation

• Deposition

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

What is the relative humidity if the dry-bulb temperature is 16°C and the wet-bulb temperature is 10°C?

• 4%

• 37%

• 45%

• 16%

What is the relative humidity if the dry bulb temp. is 14º C and the wet bulb temp. is 14º C?

What is relative humidity?

• Relative humidity is the measure of air pressure in a specific location

• Relative humidity is the amount of water vapor present in air expressed as a percentage of the amount needed for saturation at the same temperature.

• Relative humidity is the amount of oxygen present in the air

• Relative humidity is the amount of dust particles present in the air

Tags

NGSS.MS-ESS2-4

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

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The time of day when the relative humidity reaches a maximum value is usually

• at the time when the air temperature is highest 

• in the middle of the afternoon 

• at the time when the air temperature is lowest 

• just before sunrise 

Tags

NGSS.MS-ESS2-5

The temperature to which air must be cooled in order to become saturated is the: 

• Relative Humidity

• Mixing Ratio

• Dew Point Temperature

• Wet-bulb Temperature

Tags

NGSS.MS-ESS2-5