![Image of A cacophony of sound!](https://files.schudio.com/yarm-primary-school/images/blog/416.jpg)
Year 4 enjoyed an exciting science lesson investigating that sound is a vibration. It was vey loud and noisy – drums banging, bottle organs tapping and hooting, voice balloons buzzing, rulers twanging and tuning forks humming. Our ears were ringing by the end of the lesson, but we learnt a lot about how sound travels.