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Prism and Rainbow

White sunlight looks plain, but it is made of all the rainbow colors mixed together. When it passes through a glass prism, the colors spread out into a rainbow band.

In the picture

  1. The narrow white beam before the prism: a bright white ray
  2. The triangular glass prism: a clear glass block that bends the beam
  3. The broad rainbow band on the screen: the separated colors

Examples

  • A rainbow in the sky after rain
  • The shiny colors on a CD

Quiz: Prism and Rainbow (Age 9)

  1. What is white sunlight really made of?

    • Only the color white
    • Mostly water and air
    • All the rainbow colors mixed together
  2. What does a prism do to white light?

    • It changes all the colors into white
    • It bends each color by a different amount and separates them
    • It makes the light disappear
  3. After white light passes through a prism, what appears on the screen?

    • A dark shadow
    • A broad rainbow band
    • A single white dot

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.

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Science, Age 9