Condensation

You'll Need

4 identical drinking glasses

ice water

a refrigerator and freezer

What to Do

Fill one of the glasses with the ice water and set it on a table. Wait briefly.

Feel the outside of the glass. How did it get wet? Where did the water come from? Is it necessary for the glass to be filled with water for moisture to form on the outside?

Set one of the empty glasses on a table as a control. Place a second empty glass in the refrigerator, and the third in the freezer.

After about 10 minutes, remove the glasses from the refrigerator and freezer. Line up the three glasses on the table and record your observations.