Air Sponge Prove that air holds water. Fill a glass with ice. Check on the glass every few minutes. The outside of the glass will be wet. The ice inside the glass cooled the air around it.
Cool air can hold less moisture than warm air.
Air releases water as it cools. Processes that Shape the Earth and Space Grades K-2 Moon Shapes Cut sponges into circles and crescents to show the different phases of the moon. Below Dig a hole in the dirt, at least two feet deep. Examine the hole for bugs, worms, colors of soil layers, rocks, roots or other hidden treasures. Fill the hole up again.