Uncover the science behind the beautiful phenomena of rainbows with a simple demonstration. Shine light through different-sized containers of water as young scientists learn that rainbows occur when visible light is split up into its seven constituent parts. Depending on the age of your class, extend the activity by discussing wavelength, frequency, and other components of the electromagnetic spectrum.

Concepts

rainbows, electromagnetic spectrum, electromagnetism, wavelength, waves, light

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Additional Tags

rainbow, light, wavelength, frequency, electromagnetic spectrum, science

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Pros

• Related reading and math materials included
• Very little preparation required
• Activity is adaptable to the Next Generation Science Standards
• Related fictional story also included

Cons

• None