Each and every day, every one of us interacts with different sounds. These sounds can serve as a way to communicate, to inform, or to annoy us! Acoustical engineers help develop technologies that are focused on sound and are sound experts. They know about pitch and volume and how to change factors that affect these properties. Whether they work to amplify sound or to dampen it, their work is very important to us!
Sounds are all around us, but what causes them? Third graders continue to explore sound, looking for evidence of vibrations. Can you feel the vibrations when you hear a sound? Can you see the vibrations when you hear a sound? Since sound comes from many different sources, third graders are looking for ways in which they can see or feel the vibrations of sound!