Year 8 Science

11 February 2021

In science students have been learning about respiration and on Wednesday they did an investigation to see how the intensity of exercise affects your breathing rate.


For this investigation, we went outside and had to walk, jog, run and then sprint a set distance, and immediately count our breaths for one minute after each activity. We discovered that as the intensity increased, our breathing rate increased also. This is because when you exercise your muscles are working harder and need more oxygen. We breathe more rapidly to get more oxygen into our blood, so it can take the oxygen to the muscle cells quickly. The oxygen is used in the process of respiration.


Kirstie H,  Year 8