Pressure Experiment
Paper Plunge
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Materials you will need:
• Clear Glass
• Big Clear Bowl of Cold Water
• Scrunched/crumpled up piece of paper
How did that happen? |
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Steps:
1. Fill the bowl with water.
2. Scrunch or crumple up the piece of paper.
3. Push the paper into the bottom of the glass
so that it cannot fall out.
4. Turn the glass upside down and plunge it
straight down into the bowl of water.
What happens to the paper?
Where is the water level in the glass?
How this works - The air inside the glass takes up space
and pushes. The paper stays dry because the water can only get into
the glass by squashing the air inside it. Air can be squashed, or
compressed, a little, but then it pushes back and prevents the water
from reaching the paper.