What is hum?

Hum is when something makes a soft, steady sound, like a sleepy dragon breathing gently.

Imagine your favorite toy, maybe a little radio or a nightlight that buzzes softly when it's on. That’s hum. It’s not loud, and it doesn’t sing or shout, just a quiet, constant noise that you can almost feel in your bones.

Sometimes, machines like fridges or fans make a hum because they're working hard inside. They have little parts moving around, and when those parts are happy and doing their job, they make that soft, sleepy sound. You might hear it from the kitchen or the hallway, just like your toy makes its own special hum.

You can even hum yourself! When you sing a simple tune without words, that’s humming too. So, whether it's a machine or a person, hum is just a gentle, steady sound that lets you know something is working or being happy.