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十万个为什么·科学阅读30篇(5)

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How Do Rainbows Form?

How Do Rainbows Form?

彩虹是怎么形成的?

  1. Rainbows appear when sunlight meets raindrops in the air.
  2. Light bends as it enters each raindrop.
  3. It splits into red, orange, yellow, green, blue, indigo, and violet.
  4. The light bounces off the back of the drop.
  5. Then it bends again as it exits the drop.
  6. Each color bends a little differently, so they spread out.
  7. You must stand with your back to the sun to see one.
  8. No two people ever see the exact same rainbow.
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