STEM week in Year 4

As part of STEM week, year 4 have been carrying out various different experiments to demonstrate some of the things that engineers do to help our day to day lives. One experiment we carried out was all about vibrations and sounds. Using a coat hanger and some string, we banged the coat hanger against different objects, first of all with our ears unblocked and then again with our fingers in our ears to see if the sound we heard was the same or not.