Depends on the context. If this is a chemistry experiment it would be called a precipitate. If this is water in say a water course it would be called sediment.
Sediment
These particles are called sediment.
Sediment
The word you are looking for is "sedimentation." Sedimentation is the process by which sand or particles settle out of wind or water and form layers or deposits over time.
Greater density causes particles to settle faster.
Particles of sand and pebbles that are less dense than water are carried by a stream through a process called suspension. The flow of the water exerts enough force to keep these lighter particles suspended in the water and move them downstream. The particles are lifted off the streambed and transported until the flow of the water slows down or they encounter an obstacle that causes them to settle.
Mixtures in which some of the particles settle out are called suspensions. An example of a mixture is dirt mixed with a large amount of water. On the other hand, mixtures in which the particles do not settle out are called colloids.
These particles are called sediment.
Sediment
They are called colloids.
A suspension has large particles that settle out on standing.
suspension
Rock and soil!!
They are called colloids.
They are called colloids.
The particles are heavier than water and sink instead of floating.
Heavy eroded particles settle out of moving water
the ones with the highest density