Spectacular 'Liquid Nitrogen Show' launches our annual Science and Maths Week
A spectacular 'Liquid Nitrogen Show' has launched the annual Science and Maths Week at St George's Junior School, Weybridge.
On Friday 3 February, Years 4 and 5 took part in the Liquid Nitrogen Show to kick start our annual Science and Maths Week. Here's what pupils Braedyn and Sophie in Year 5 had to say about the experience:
"Mr Andrew Hanson, a scientist from the National Physical Laboratory in Teddington, came to talk to us about liquids, solids and gases.
We talked about the coldest thing in our house, which is our freezer. Afterwards, Mr Hanson did some experiments with some liquid nitrogen which was -196 degrees Celsius.
I was really impressed when he put an inflated balloon into liquid nitrogen and it shrank in size as the air froze and went all brittle and crispy.
Mr Hanson had to be very careful as the balloon warmed back up to room temperature, to ensure that it didn't burst. He also showed us what happens when a tennis ball is placed in liquid nitrogen; it went from being very bouncy to thudding on the floor like a cricket ball.
Near the end of the workshop, Mr Hanson poured liquid nitrogen over Miss Farnham's hand. She looked a little nervous at first but later said that it felt silky, cold and a little wet.
Finally, we all went outside, a stood in a large circle. Mr Hanson ran round in a large circle pouring liquid nitrogen by our feet as he went. We're sure everyone really enjoyed themselves."
6 February 2017