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41 votes
41 votes
Air is pumped into the tyre to inflate it.

This increases the temperature and the pressure of the air in the tyre.
Use ideas about molecules to explain why the air pressure in the tyre increases. *

User Fred S
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1 Answer

5 votes
5 votes
Higher temperature causes molecules to rise to the top of the tire and therefore increase the air pressure in the tire.
User Topo
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