Stand with the sun behind you and spray a fine mist from the garden hose out in front, watching for a rainbow to appear in the water droplets. Move the spray angle around to find where the rainbow shows up best.
What you need
- a garden hose with a spray nozzle
How to do it
- 1Stand with the sun behind you and the hose pointed out in front.
- 2Set the nozzle to a fine mist and spray upward into the light.
- 3Look for a rainbow forming in the mist and adjust the angle to find it.
- 4Try walking through the rainbow and watching how it changes as you move.
Variations
- If a hose with mist setting isn't available: a spray bottle held up to the sun makes a smaller version of the same effect.
- How it ends: standing right inside the rainbow for one last look is a magical way to finish.
💡 Parent tip
Best done in the late afternoon when the sun is lower in the sky -- the rainbow shows up much more easily than at midday.
What your child develops
- Basic optics — seeing how light splits into a rainbow through water droplets is real, visible science
- Sun-safety awareness — learning why you never look directly at the sun while doing this builds a small safety habit
- Cause and effect — adjusting the spray angle to find the rainbow builds hands-on experimentation
Safety notes
- Never look directly at the sun. Only do this activity with adult supervision near a hose and water spray.
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