Sediment that moves along the bed of a stream is called bedload.

Here's a breakdown:

* Bedload refers to the larger particles of sediment that are transported along the streambed by rolling, sliding, or saltation (a hopping motion).

* Suspended load refers to the finer sediment particles that are carried within the water column.

* Dissolved load refers to dissolved minerals and salts that are transported within the water.

So, the next time you see a stream, think about the different ways sediment is moving and the forces that drive these processes.