Which of the following describes particles that settle to the bottom of a stream?

• A. Suspended load
• B. Bedload
• C. Dissolved load
• D. Streamflow

Answer: (B)

The correct choice describes particles that settle to the bottom of a stream as bedload. Bedload consists of larger, heavier sediment particles that are transported along the streambed, often rolling or sliding. These particles do not remain suspended in the water column; instead, they make contact with the streambed, contributing to the overall sediment transport and shaping the streambed structure.

In the context of other options, suspended load refers to finer particles that are carried within the water column due to turbulence and can remain suspended for extended periods. Dissolved load involves minerals and chemicals that are fully dissolved in the water, transporting ions rather than solid particles. Streamflow refers to the movement and flow of water itself, not the materials being transported. Understanding the distinction between these terms is crucial for grasping the dynamics of sediment transport in fluvial systems.