Does air take up space?

We have been learning about matter and states of matter in 4th Class B. Today we carried out a science experiment to test if air takes up space.

First, we filled the sink with water.
Next, we put kitchen roll in the bottom of a plastic cup.
Then we placed the plastic cup into the water.
When we took out the cup we were amazed to see that the kitchen paper was dry! This means that air does take up space!
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