What Is the Purpose of a Shadow?

Shadows are like invisible helpers that tell us where light is hiding. When something blocks the light, a shadow appears, it shows us which parts are in the dark and which are still lit up. Shadows help animals hide from predators and help people know when to bring out the flashlight.

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Examples

  1. A tree casts a long shadow on the ground during the day.
  2. You see your shadow when you walk outside at night with a flashlight.
  3. Animals use shadows to hide from other animals.

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Categories: Physics · light· optics· shadow· science · Text is available under the Creative Commons Attribution-ShareAlike License.