What are standing waves?

A standing wave is when waves go back and forth in one place instead of moving forward like they usually do.

Imagine you're on a swing. You push yourself forward, and then the swing goes backward, it keeps going up and down in the same spot. That’s kind of what happens with a standing wave. Instead of just bouncing from one end to another, the wave stays put and just moves up and down or side to side.

When two waves meet each other at just the right time, like one going forward and one coming back, they create a special kind of dance called a standing wave. You can see this when you shake a jump rope in the middle while someone holds both ends. The rope moves up and down, but it doesn’t go all the way to either end, it stays in place like it’s doing a little wiggle party.

It's just like when you bounce a ball on a trampoline, if you do it just right, the ball goes up and down without leaving the trampoline. That’s the fun of standing waves!