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Lamp, Block, and Shadow

A bright lamp shines through dusty air. A wooden block blocks the light and makes a dark shape on the wall.

In the picture

  1. A small bright lamp: the source of the straight light beams
  2. A solid wooden block with a star top: it stands in the light beam
  3. A dark shadow on the wall: it matches the block’s outline

Examples

  • Your shadow on a sunny sidewalk.
  • A hand puppet’s shape on a wall.

Quiz: Lamp, Block, and Shadow (Age 11)

  1. How does light travel from a lamp?

    • Only when it is dark
    • In curved paths
    • In straight lines
  2. What shape does a shadow have?

    • The same shape as the object blocking the light
    • Always a circle
    • The same shape as the lamp
  3. What makes a dark shadow on a wall?

    • A solid object blocking the light
    • A lamp shining on a wall by itself
    • Dust moving in the air

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 11