Shortwave

Okay kiddo, so shortwave is like a special kind of radio signal that can travel very very far. It's like a really strong superhero signal that can go through walls and even across oceans! When we want to talk to someone far away, we can use shortwave radio to send our message to them.

But shortwave is not just for talking to people, it's also used for lots of other things like listening to music or news from all over the world. Think of it like a magic ear that can pick up sounds from all over the planet!

Now, shortwave is special because it travels through the air differently than other radio signals. It can bounce off objects in the sky and even the ground, which helps it reach really far places. This is why shortwave is used a lot by airplanes, ships, and even spies!

So next time you hear someone talking on a radio but they're really far away, it might just be shortwave doing its magic!