Year four students found out how sound travels when they made their very own string phones in Science lesson this week.

The eight to nine-year-olds crafted the old fashioned technology from just string, a sharpened pencil and paper cups.

Classmates particularly enjoyed speaking into the retro contraptions and hearing each other’s voices.

After the experiment, the cohort learned how sound waves are converted into vibrations at the bottom of the cup and travel along the string before being transformed into sound waves at the other end.

Sound travels through the air but it travels even better through solids such as a cup and string, allowing noises to be heard that might be too far away when traveling through the air.

Old landline phones were created using the same principle as a string telephone. The sound waves are turned into an electrical signal that can travel much farther than a simple string.

Posted on Categories Junior School