What is referred to as the sand, gravel, and larger rock fragments within a stream?

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

Answer: (B)

The term for sand, gravel, and larger rock fragments within a stream is indeed bedload. This classification refers specifically to the sediments that are transported along the bottom of a waterbody. Bedload typically consists of larger particles that are too heavy to be carried by the water's flow in suspension, unlike suspended load, which consists of finer materials that can remain afloat due to turbulence.

In streams and rivers, bedload is moved primarily through rolling, sliding, or bouncing along the substrate, which effectively differentiates it from other types of loads like dissolved load, where minerals are ionized and carried within the water itself. Therefore, bedload accurately captures the physical nature of these materials as they interact with the streambed. Understanding the dynamics of bedload is essential for grasping sediment transportation and river morphology.