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Light and Color Experiments: Making Rainbows from White Light

How do you split white light to show that it's composed of a rainbow of color? In this simple lab, students will shine a flashlight on a mirror in a tub of water and see the resulting rainbow.


Questions Answered:

What colors is white light comprised of? How can you make a rainbow? 


Topics Addressed:

Visible Spectrum Rainbows 


Materials Needed

Plastic shoebox, water, mirror, white cardboard, flashlight


Preparation Time

gather materials


NOTE: This activity is part of the Light, Optics, & Color Unit found here.

Light and Color Experiments: Making Rainbows from White Light


    Answer Keys and Teacher Notes address most questions and issues that might arise in this study—you shouldn’t have to do any outside research unless you want to.

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