Which term describes small waterfalls or rapids in a river?

Which term describes small waterfalls or rapids in a river?

• A. Small Falls; Small Rapids
• B. Perennial River
• C. Intermittent Stream
• D. Disappearing Stream

Answer: (A)

What’s being tested is identifying the term that names small vertical drops and rough, fast-moving sections in a river. Describing them as “Small Falls” or “Small Rapids” directly captures both kinds of features—the little waterfalls where the river plunges over a step in the bed and the rapid stretches where turbulent, high-speed water flows over rocks. This is exactly what people mean when they refer to small-scale vertical drops or turbulent segments along a river. The other options describe how a river behaves over time rather than physical features of the riverbed. A perennial river flows year-round, an intermittent stream only runs during certain times or seasons, and a disappearing stream may dry up or vanish into the ground. None of those describe small waterfalls or rapids.

What’s being tested is identifying the term that names small vertical drops and rough, fast-moving sections in a river. Describing them as “Small Falls” or “Small Rapids” directly captures both kinds of features—the little waterfalls where the river plunges over a step in the bed and the rapid stretches where turbulent, high-speed water flows over rocks. This is exactly what people mean when they refer to small-scale vertical drops or turbulent segments along a river.

The other options describe how a river behaves over time rather than physical features of the riverbed. A perennial river flows year-round, an intermittent stream only runs during certain times or seasons, and a disappearing stream may dry up or vanish into the ground. None of those describe small waterfalls or rapids.