Gather your supplies. Fill your jars with water to about 2 inches from the top. If you fill your jars too full, you won’t have enough room to make the “cloud”.
Also, if you can, let each child create a rain cloud in a jar. Lessons tend to “stick” better when done in a hands-on way.
Spray a layer of shaving cream on top of the water in each jar. This will represent the cloud. Ensure you don’t make your “cloud” too compact, or the “rain” will have trouble getting through it. Make sure to spray it loosely on top.
Once kids have their clouds “just right,” let them squirt a few drops of food coloring around the top and sides of the shaving cream cloud. They can use all one color or multiple colors.
You will need liquid food coloring. Gel coloring won’t drip like you need it to for this experiment.
The food color will slowly leak through the cloud, which will look like rain coming through the clouds.