Evaporation and Condensation

Front

What is evaporation?

Back

Evaporation is the process by which a liquid changes into water vapor (gas).

Front

Give an example of evaporation.

Back

A puddle drying on a warm, sunny day or water drying from wet clothes by being left outside or put into the dryer.

Front

Describe a classroom demonstration of evaporation.

Back

We put one cup of water under a light bulb and left another cup at room temperature not under the light. More water evaporated from the cup under the light over the same amount of time.

Front

What is condensation?

Back

Condensation is the process by which water vapor (gas) changes into liquid water, usually on a surface.

Front

Give an example of condensation.

Back

Dew on the grass in the morning, water droplets forming on a cold glass, fog on the mirror after a shower.

Front

Describe a classroom demonstration of condensation with ice water.

Back

We filled two cups, one with room temperature water and one with ice water. The cup with the ice water formed condensation on the outside almost immediately.

Front

Describe a classroom demonstration of condensation chambers.

Back

We created condensation chambers by putting a cup with a dome in the sun and saw condensation collect on the side of the cup overnight.

Front

Describe a classroom demonstration involving a water/ice system for condensation.

Back

We filled a cup with warm water and placed a cup of ice on top. The water vapor began to condense on the bottom of the cup of ice. Adding rock salt made the condensation colder, becoming frost.

Front

Evaporation would most often occur.....

Back

On a hot, sunny day

Front

Condensation would most likely occur...

Back

On a cold glass of water on a hot day