Which part of a river is at its highest stage near the source and is characterized by large boulders and turbulent water?

Which part of a river is at its highest stage near the source and is characterized by large boulders and turbulent water?

• A. Upper course
• B. Waterfalls
• C. V shaped valley
• D. Hydrological Cycle

Answer: (A)

The part of a river near its source has a steep slope and high energy, so the water moves quickly and turbulently. This environment can transport large pieces of the riverbed, like boulders, and the flow is very forceful and irregular. That combination of a high-energy, turbulent flow and carrying large bedload is what characterizes the upper course, setting it apart from the rest of the river system. Waterfalls are features you can find in this area, but they’re specific features rather than the general river section itself. A V-shaped valley is a landform created by erosion in the upper course, not the broad concept of the part of the river. The hydrological cycle is a global water system, not a river segment.

The part of a river near its source has a steep slope and high energy, so the water moves quickly and turbulently. This environment can transport large pieces of the riverbed, like boulders, and the flow is very forceful and irregular. That combination of a high-energy, turbulent flow and carrying large bedload is what characterizes the upper course, setting it apart from the rest of the river system. Waterfalls are features you can find in this area, but they’re specific features rather than the general river section itself. A V-shaped valley is a landform created by erosion in the upper course, not the broad concept of the part of the river. The hydrological cycle is a global water system, not a river segment.