Multiple choice

When we blow air in a balloon, it increases in size. It happens because __________.

  1. air is invisible

  2. air occupies volume and space

  3. air has no weight

  4. air has no mass

  5. air contains water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Air, like any other gas, has volume. When you blow air into a balloon, the air takes the shape of the balloon. If more air is blown in, the balloon becomes larger as the volume of the air is increased. If some of the air is released, the balloon becomes smaller as the volume of the air is decreased. Air also creates its own space when filled in the things like balloon.

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