Year 4 How Does Sound Travel?3 February 2025 (by rmilne) |
Year 4 started their lesson by looking at a range of drums and exploring how sound can be made louder. We thought about the material the drum was made from and the size of the drum and noticed the harder we hit it and the bigger vibrations we made, the louder the sound was. Then we thought about how far away we could move before we would stop hearing a sound. We set up a mini investigation outside where we all started near the drum and moved further away until we stopped hearing it. We repeated the same activity with a speaker. Although we didn’t stop hearing the sound at the same time, we all stopped hearing the sound at some point. We thought about why this happened and considered sound waves like ripples when you drop a stone into a pond: the further they go, the weaker they become until they have no energy at all.
