How Can You Hear Someone Talking From Around a Corner?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How can you hear someone talking from around a corner?

The Big Idea

You can hear someone talking from around a corner because sound waves bend and bounce! They spread out around the edges of doors and corners. Light waves are much tinier, so they do not bend that way.

Waves Bend

Step one: waves bend. Sound waves spread out and bend around the edges of doors and corners, a bit like water spreading out through a gap. This is called diffraction.

Low Bends More

Step two: low sounds bend best. Low sounds have long waves that bend around corners easily, and some are longer than a door. High sounds have short waves that bend less.

Sound Bounces

Step three: sound bounces. Sound also bounces off walls and floors, so it can arrive even if no straight path exists. Light waves are much tinier, so they do not bend around corners in the same way.

A Closer Look

Let's take a closer look! A friend talks around the corner. The sound waves bend around the edge. Others bounce off the walls and floor. Both paths bring the sound to your ear.

Quick Facts

Quick facts! That is why you can hear people you cannot see. Their voice may sound deeper or muddier. That is because the high sounds bend less. Be kind and gentle when you talk, since people can hear around corners!

Think Like a Scientist

Now, detective task! Have a friend talk quietly behind a nearly closed door or around a corner. Can you hear them? Does their voice sound deeper or muddier than usual? Share what you discover with a grown-up.

Outro

Sound can bend around corners. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!