light and sound Expenimert

This afternoon Room5  and LS1 went to the resenve and did an expeniment. We needed to put our heard  the  clapper. We made a long line beside the water. Ms kirkpatrick  was at the end. When she clapped the sound travels down the line.People put their hands up in a wave. We saw the dopper before we heard the sound because light travels faster then sound.