Creates a cloud in a box by evaporating water to create steam, then simultaneously adding a contaminate to the atmosphere for the cloud to form on, and cooling the air while reducing the pressure in the box to condense the water and form droplets. In this way, it mimics the basic atmospheric conditions that contribute to cloud formation. I chose to present this as a series of "failed" experiments, which allowed the students to put together the puzzle of cloud formation one piece at a time. PURPOSE
 Explains cloud formation to 4th or 5th grade students. Shows how temperature, pressure, and atmospheric contaminates contribute to cloud formation. Provides a fun introduction to phase changes, or lets students have a more in-depth look at phase changes in our environment.