These sound energy videos reinforce basic concepts and support this hands-on science unit. First, kids learn that sound is a vibration. Second, they explore how sound travels. In the next two videos, students learn about amplitude and pitch. Finally, they see that sound travels best through solids. More Science Videos
6 Sound Energy Videos for Kids
- Vibrations cause sound waves, which spread out in all directions.
- Molecules bump into one another (compress and expand).
- When more energy is used for a sound, the amplitude (loudness) is increased.
- As less energy is used for a sound, the amplitude is lower, and the sound is quieter.
- If sound waves have more room to move, the waves are longer, and the sound produced has lower pitch.
- Conversely, when sound has less room to move, the waves are shorter and the sound produced has higher pitch.
- Materials that are harder (denser) allow sound to travel better and are better conductors.
- On the other hand, materials that are softer (less dense) don’t allow sound to gravel well and are better insulators.
- Sound can bounce off of smooth surfaces.
- Because they are dense, solids allow sound to travel faster.