6. interpret differences in data among various groups. 2. use scientific equipment properly during the lab activity. 3. gain confidence through the sharing of responsibility, drawing on individual strengths. Teacher Knowledge Be familiar with stages of the water cycle. Understand the processes of condensation and sublimation.
Warm air can hold more moisture than cold air.
When warm air comes in contact with something cold, it looses some of its moisture. In this activity, the air next to the aluminum container will be cooled by the ice cubes and will hold less moisture. Frost is formed by the same process as snow, except that snow forms in clouds and frost forms on objects on the ground. Because of the lower temperature, the water vapor in the air next to the aluminum container will change directly into tiny crystals of ice, forming frost. Helpful Hints 1.