A bell is a hollow, usually metal object that makes a ringing sound when struck. It is often shaped like a cup or a dome and can be found in various sizes. Bells are commonly used in churches, schools, and public places to signal the start or end of an event. The sound of a bell can carry over long distances, making it an effective way to communicate. Bells have a rich history and are often associated with celebrations and ceremonies. For example, the famous Liberty Bell in Philadelphia symbolizes American independence. Additionally, bells are used in music, such as in handbell choirs, where they create beautiful melodies when played together.