A rainbow is a colorful arc in the sky that appears after rain., Description, A rainbow is like a painter’s palette in the sky, displaying all colors., Analogy, The word “rainbow” comes from Old English regnboga, meaning “rain + bow.”, Etymology, Rainbows appear when sunlight passes through raindrops, bending and reflecting light., Principles of Operation, Unlike a halo, which forms around the sun, a rainbow only appears after rain, Contrast, A rainbow is a meteorological phenomenon, which is a type of natural event producing visible light., Classification, Rainbows have fascinated humans for centuries and appeared in many myths., History, A rainbow appears as a colorful arc due to sunlight hitting raindrops., Cause and Effect, Examples of rainbows include the ones seen over Niagara Falls and tropical regions., Examples, A smartphone is like a mini-computer because both can run apps, store information, and connect to the internet., Comparison

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