Science Week Finale

Gillian Gehring from The University of Sheffield came in to school to teach us about temperature. She did lots of demonstrations of how cooling gas to less than -200 degrees turned it into a liquid. It was amazing!


She cooled some daffodil heads which we then crushed. They were very brittle.

Gillian cooled the gas in a ballon downing the liquid nitrogen. The ballon was deflated as the air turned into a liquid which gathered at the bottom. As it warmed up again, the balloon was again inflated.


Gillian used the pressure of the nitrogen turning into a gas to inflate a balloon.

Finally, Gillian had a bucket of soapy water which she poured the remains of the nitrogen on. Just look what happened!

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