Okay kiddo, do you know what a photo is? It's like a picture that can capture a moment in time, right? Well, an actionshot is a photo that captures a moment when something is moving really fast or happening quickly.
Let's say you're at a soccer game and there's a player who kicks the ball really hard towards the goal. If someone takes a photo of that moment when the ball is flying through the air, that's an actionshot!
It's really tricky to take an actionshot because you need a special camera that can take pictures really quickly and freeze the movement of the thing that's happening. But when you get a good actionshot, it can be really cool to look at and show off to other people.