A sound experiment that only needs some string and a metal coat hanger! https://spark.iop.org/musical-coat-hanger
We’d love to see you amaze your siblings or parents with this awesome experiment and work out why you think this happens. If you don’t have a metal coat hanger, try this experiment with a fork!
Check out many more experiments on the Institute of Physics’s IOP Spark website here: https://spark.iop.org/