Over the last two weeks, in Year 4 we have been learning about sound and how we hear. We started by looking at musical instruments and how we could feel them vibrate as we played, banged and hit them. We looked at how soundwaves travel and how they look different depending on the volume and pitch of the sound.
This week we have looked at the ear, naming parts of it and how the soundwaves travel into our ears and get converted into electrical signals to the brain. Our experiment was about how we can stop soundwaves through deflection and absorbing. By stuffing cups with different mediums (cotton wool, paper or fabric) we tested to see what impact they had on the loudness of a chime.