The fifth grade class from Dana L. Lyon Middle School is featured in this week’s Weather Wisdom. Donovan Ryan from group five asked, “How do rainbows form?”
The two ingredients needed for a rainbow to form are sunlight and moisture.
Sunlight shines on a water droplet suspended in the air. As the light passes through the droplet, it then bends or refracts. This is because light moves slower in water than air. Sunlight bounces off the back of the droplet, then bends. We see all the colors because sunlight is made up of wavelengths.
Also important to note, rainbows form on the opposite side of the sky as the sun. We must be a few hours from sunrise or sunset to see a rainbow, and you must be between the rain and the sun.