The colors of a rainbow make up something called a ‘spectrum’—a Latin word meaning ‘appearance’ or ‘image’!
Weather - Facts for Kids

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Random Facts About Weather For Kids
Rainbow prediction apps use information about the Sun’s position and local weather conditions to help people spot rainbows!
Historical & Cultural Facts
Ancient Greeks believed lightning bolts were thrown by Zeus, the king of gods!
Plants don’t react to rainbows, but they use the same light-splitting process to separate useful wavelengths (light colors) for photosynthesis (making food from sunlight)!
In countries near the equator, warm and wet air often makes big storm clouds almost every day. That means places close to the equator can have lightning storms many days of the year!