Water in the Air

What is water vapor? Can you see water vapor?

• Water in the liquid phase, you can only see it when it's raining.

• Water in the gas phase, You cannot see water vapor.

• Water in the gas phase, it looks like steam.

• Water in the liquid phase, but it's invisible.

How does water vapor get into the air?

• It gets into the air when it's raining.

• it gets into the air when there are a lot of clouds.

• It gets into the air only on humid days.

• It gets into the air when water evaporates.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

What is evaporation?

• When clouds form near the ground.

• The process of liquid changing into gas.

• The process of making clouds.

• The process of gas turning into liquid.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Organize these options into the right categories!

Groups:

(a) TRUE STATEMENTS

,

(b) FALSE STATEMENTS

• Cold air holds less water than warm air.

• Cold air holds more water than warm air.

• As air cools, the amount of moisture it can hold increases.

• The temperature at which condensation begins is called the DEW POINT.

• As air cools, the amount of moisture it can hold decreases.

• The temperature at which condensation begins is called RELATIVE HUMIDITY.

• If the dew point is above freezing, ice crystals will form.

• As water vapor condenses, it forms tiny droplets of water or ice crystals.

• If the dew point is above freezing, water droplets will form.

• As water vapor expands, it forms tiny droplets of water or ice crystals.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Match the following situations to how the relative humidity will be affected.

• Relative Humidity May Stay Same

• Air temperature grows warmer, and new moisture is added to the air.

• Relative Humidity Will Drop

• Air temperature grows warmer, but no new moisture is added to the air.

• Relative Humidity Will Rise

• Air temperature grows colder, and new moisture is added to the air.

Tags

NGSS.MS-ESS2-5

Match the following

• The percentage of water vapor in the air compared to the maximum amount the air can hold

• Dew Point

• The temperature at which condensation begins

• Humidity

• The measure of the amount of water vapor in the air

• Relative humidity

Tags

NGSS.MS-ESS2-5

What does saturated mean?

• When water from the oceans changes into water vapor.

• When the clouds form storms.

• When it's too cloudy to see where you are going.

• When the air is full of water vapor.

Tags

NGSS.MS-ESS2-4

What is relative humidity?

• When there is so much water vapor in the air that the air is full.

• The amount of water vapor compared to how much the air can hold.

• The amount of liquid the air can hold.

• When water vapor makes your skin feel sticky.

What happens to the relative humidity when the temperature goes up?

• It becomes saturated.

• It stays the same because the "cup" gets smaller

• It goes down because the "cup" gets bigger.

• It goes up because the "cup" gets bigger.

How do you know there is water vapor in the air.? (What is the proof?)

• Condensation

• Precipitation

• Evaporation

• Saturation