Humidity and Dew Point

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

• Evaporation

• Condensation

• Sublimation

• Deposition

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

The sun heats up surface water, causing evaporation (turning a liquid into a gas).  The water vapor then rises into the air creating....

• rain

• pollution

• fog

• humidity

Tags

NGSS.MS-ESS2-4

Water droplets that condense from the air onto cool surfaces near the ground are called....

• fog

• precipitation

• dew

• icicles

Tags

NGSS.MS-ESS2-4

If the air is only holding one-third as much moisture as it can possibly hold, what is the relative humidity?

• 50%

• 25%

• 33%

• 67%

What will happen if the relative humidity is 100%, and the temperature begins falling?

• The air will be sticky and uncomfortable

• Dew will form

• The temperature will rise

• The atmospheric pressure will fall

Tags

NGSS.MS-ESS2-5

Where can you find water vapor in the air? 

• only in clouds             

• only as rain                     

•  everywhere

Tags

NGSS.MS-ESS2-4

The Dew point measurement is a good measure of how humid it feels outside.

• True

• False

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

NGSS.MS-ESS2-6

When the air is full of water and has a relative humidity of 100% it is said to be ___.

• full

• humid

• saturated

• warm

Relative humidity is expressed in what unit?

• Cubic metre

• Metre per litre

• Percent

• Gallons