What do bell towers often use?

Bell towers often use bells to make loud sounds that people can hear far away.

Imagine you're playing with a big, heavy ball in a gym. When you drop it on the floor, it makes a thud that echoes around the room. Now imagine if that ball was inside a giant hollow tube, when you let it fall, the sound would be much louder and travel farther. That's kind of like what happens in bell towers.

Bells are usually made of metal and shaped like big bowls. When someone hits them with a stick or pulls a rope, they swing back and forth, making a loud ringing noise. The bigger the bell, the louder the sound, just like how a big drum makes a deeper and louder sound than a small one.

Bell towers are often on top of churches, schools, or town halls. They use bells to tell people when it's time for a service, a break, or even to celebrate special days. It’s like having a giant, loud alarm clock that everyone in the neighborhood can hear!