Is it too hot/cold outside to do the speed of sound activity you have planned? Does your school not have a field large enough to demonstrate sound? Are you a home school teacher or a tutor who needs an quick activity to get this concept across? Then this activity is for you!
In this ONLINE demonstration of speed of sound, students move an explosive up to 5km away and detonate it. Students time how long it takes the sound of the explosion (a loud POP) to get to them after detonation. They document their findings, create a graph to show the relationship between distance and time, and answer analysis questions.
This can be done as a whole class, small group, independent or even homework!