CD Rainbow

A rainbow appears. Ask students to predict what will happen. Tilt CD so reflected light lands on wall/paper. Key idea: Tiny tracks act like a diffraction grating that separates wavelengths. Ask: Where were the colors hiding? Safety and cleanup: Never aim reflected sunlight at eyes. https://tierneyfamilyfarms.com/blogs/kids-science-projects/create-cd-rainbows-light-diffraction-experiment-for-kids