====== Sound Demonstrations ===== Sound is a form of energy that travels as vibrations through a medium such as air, water, or solids. This category explores how sound is produced, how it moves, and how it is detected. Understanding sound links physics to everyday experiences such as speech and music, and also to technologies that use sound waves.\\ ---- struct table ---- schema: demo cols: page, materials, difficulty, safety, summary header: "Demonstration", "Materials", "Difficulty", "Safety", "Summary" filter: categories~Sound filter: page~demonstrations:% sort: title csv: 0 ---- **Materials**\\ ★☆☆ Easy to get from supermarket or hardware store\\ ★★☆ Available in most school laboratories or specialist stores\\ ★★★ Requires materials not commonly found in school laboratories\\ **Difficulty**\\ ★☆☆ Can be easily done by most teenagers\\ ★★☆ Available in most school laboratories or specialist stores\\ ★★★ Requires a more experienced teacher\\ **Safety**\\ ★☆☆ Minimal safety procedures required\\ ★★☆ Some safety precautions required to perform safely\\ ★★★ Only to be attempted with adequate safety procedures and trained staff\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\