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Warm Air Makes a Cloud

The sun warms a lake and a field, and warm, wet air floats upward. High up the air gets cold, and the water in it turns into tiny droplets that make a cloud.

In the picture

  1. The sun: warm sunlight heating the water and the ground.
  2. A rising wavy arrow: warm, moist air climbing from the warmed surface.
  3. A droplet high in the cloud: water vapour turning into a tiny droplet in the cold.

Examples

  • Steam rising from a hot bath and fogging the mirror.
  • A cold drink can turning wet on a warm day.

Quiz: Warm Air Makes a Cloud (Age 9)

  1. What happens to warm, moist air as it goes higher?

    • It gets hotter.
    • It stops moving completely.
    • It cools down.
  2. What are clouds made of?

    • Pieces of sunlight.
    • Tiny water droplets.
    • Dry soil from the ground.
  3. What turns water vapour into tiny droplets high in the sky?

    • The bright sunlight.
    • The warm ground below.
    • The cold air up there.

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