Forearc

Okay kiddo, so you know how the Earth has different layers, like the crust, mantle, and core? Well, when two tectonic plates collide, one of them gets pushed under the other. That's called subduction.

When that happens, the plate that's getting pushed under, called the oceanic plate, starts to sink down into the mantle. But before it gets all the way down there, it kind of gets stuck and forms a bump or ridge near the edge of the continent.

This bump or ridge is called the forearc. It's a special area that helps scientists study what happens when tectonic plates collide.

Sometimes, volcanoes can form on the forearc because of the heat and pressure from all the movement of the plates. And sometimes, big earthquakes can happen there too.

So that's a forearc, kiddo! It's a bumpy area that tells scientists a lot about how the Earth's crust is moving and changing.