How Rainbows Form

Somewhere over the rainbow ... the sky appears to be darker than below it? Why is that? A video from an interesting physics playlist illustrates the interaction between the visible spectrum and droplets of rain. It also doubles the learning by explaining the double rainbow phenomenon!

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Make the video the opener for a lesson about the visible spectrum
  • Find pictures of unusual rainbow formations and challenge learners to explain how they formed
Classroom Considerations
  • Make sure the class is familiar with the electromagnetic spectrum prior to viewing
  • The resource is brief and to the point
  • Explains each portion of the phenomenon clearly through words and diagrams
  • None
Common Core