Streams are like little rivers that flow down the hills and mountains. They can create different shapes on the land called fluvial landforms. These landforms are made by moving water and can be very interesting!
One fluvial landform is called a "meander". This happens when the water in the stream flows around a bend in the land. Sometimes, the water will move faster on one side of the bend than the other. This causes the stream to carve out the land on one side more than the other, making a curvy shape.
Another landform is called a "delta". This happens when the stream flows into a larger body of water, like a lake or an ocean. The water slows down and deposits all the stuff it was carrying - like dirt, sand, and rocks - on the bottom. Over time, this builds up and creates a big triangle shape where the stream meets the bigger body of water.
A "canyon" is another landform that streams can create. This happens when the stream flows through a narrow space between mountains or hills. The water flows faster and stronger, and over time, cuts deep into the ground to create a big, rocky valley.
These are just a few examples of the many different types of fluvial landforms that streams can create. So next time you're near a stream, take a look around and see if you can spot any interesting shapes in the land!