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Wings Push Air

A bird flaps its wings downward, and the wing feathers press against the air. That push helps the bird lift off and move forward.

In the picture

  1. Primary wing feathers pressing down on the air
  2. Air flowing backward behind the wing
  3. Thick chest muscles pulling the wing down
  4. Forward motion of the bird

Examples

  • A swimmer pushes water backward with a hand to move forward.
  • A fan pushes air backward, and you feel the air flow in front.

Quiz: Wings Push Air (Age 10)

  1. What do a bird’s wing feathers do during a downstroke?

    • Hold the bird still
    • Pull the bird backward
    • Press on the air
  2. When the wings press down on the air, what does the air do?

    • It makes the bird’s wings stop moving
    • It pushes back and helps the bird rise and move forward
    • It pulls the bird down toward the ground
  3. What pulls a bird’s wing down during a flap?

    • The primary wing feathers
    • Thick chest muscles
    • The air behind the wing

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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Animals, Age 10