Like ripples in water, students investigate how sound travels in air, liquid, and solid objects. Students create Big Ears to capture more sound and make a model of an eardrum. Students amplify sounds by increasing an object's vibration or attaching it to another object which makes an even louder noise. Making cup and string telephones, students observe how sound can be channeled as it travels through solids instead of the through air. Students try different techniques of making sounds higher or lower.
Students investigate echoes and how sounds far away take time to arrive.