Have you ever seen a big pile of rocks and gravel on the side of a mountain? That's a fluvioglacial landform! It's basically a pile of stuff that was carried and dropped by a river that had melted from a glacier.
Here's how it works. When it's really cold, water freezes and turns into ice. This ice can build up and create a huge ice mass called a glacier. When the weather gets warmer, the ice starts to melt and turn back into water. This water flows downhill and picks up rocks and gravel on its way.
As the river flows, it can create a valley or channel. Sometimes, the river will slow down and drop some of the stuff it picked up. This can create a pile of rocks and gravel called a moraine. Other times, the river will deposit this stuff in a different place and create a flat area called a outwash plain.
So, fluvioglacial landforms are basically piles of stuff that were dropped by a river that used to be part of a glacier. They can come in different shapes and sizes, but they all tell us about the power of water and ice in shaping the land around us.