We continued our learning about sound by carrying out an investigation into the relationship between volume and vibrations.
First, we observed the vibrations when we played the musical instruments louder or fainter.
We found that the louder the volume, the bigger the vibrations – remember, the vibrations cause particles in the air to vibrate which in turn creates sound.
Then, we carried out a more scientific investigation using a decibel metre. Decibels are the unit we use to measure sound. We played the instruments and recorded the volume.
Finally, just like scientists would, we created a graph to show our results. Take a look at a few of ours…
