Water in the Air

The amount of water vapor in the air is called

• temperature

• windchill

• barometric pressure

• humidity

Tags

NGSS.MS-ESS2-4

What happens when air gets warmer?

• It can hold less water vapor.

• It can hold more water vapor.

• It cannot hold water vapor.

• It holds as much water vapor as before.

The amount of water vapor in the air compared to the most water vapor the air can hold is called the

• air pressure

• rain gauge

• relative humidity

• water range

When the air holds all the water it can at a certain temperature, the air is

• full

• done

• cloudy

• saturated

Tags

NGSS.MS-ESS2-5

If the amount of water vapor in the air stays the same, but the air gets cooler, the relative humidity

• increases

• decreases

If the amount of water vapor in the air stays the same, but the air gets warmer, the relative humidity

• increases

• decreases

How do you measure the relative humidity?

• Use only a wet-bulb thermometer.

• Use only a dry-bulb thermometer.

• Use a psychrometer and a special table.

• Cover a thermometer with a damp cloth.

What is it called when a gas changes to a liquid?

• evaporation

• condensation

• humidity

• water vapor

Tags

NGSS.MS-PS1-4

When do water droplets form on the outside of a glass of ice water?

• when the air is saturated and then cools

• when the relative humidity goes up

• when the air is very warm

• when the relative humidity is 99%

Tags

NGSS.MS-PS1-4

What happens when air reaches its dew point?

• Water evaporates.

• The air becomes saturated.

• Ice melts.

• The air gets cooler.

Tags

NGSS.MS-ESS2-5