Lung Capacity in the Owls

In science (over the past few weeks) we've been learning about the circulatory system.  Today it was time to put what we learnt into practice!

First we hypothesised how our different lungs might affect the air we can hold in.

We wondered...

“People with bigger lungs will blow bigger balloons because they have more oxygen.” - Emile

“I think it’s about how old you are because sometimes a part of you grows - maybe your lungs and body grow so you’ll blow bigger balloons” - Maitha

“It’s not about how big the lungs are but how strong the lungs are.” - Nina

Half of us thought that lung capacity was related to the size of the lungs and the other half thought it was related to the strength of the lungs.

To find out for sure, we took part in an experiment to test our lung capacity.  In one breath we had to blow up a balloon and then we measured the diameter of each balloon to compare our lung capacity.

These were our results: