A River Is Flowing in a Broad,alluvial Valley and the River

question 45

Multiple Choice

A river is flowing in a broad,alluvial valley and the river is silt-laden but also moves sand and a small amount of gravel.The government decides to build a dam across the valley for power and flood control.What will happen to the river,upstream of the dam?

• A)The river will downcut.
• B)The river will start to deposit sand and gravel,frequently spilling out of its channel.
• C)The river will not change.
• D)The river will respond to the new temporary base level and cut laterally outside its valley,widening the valley.

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Definitions:

Muscle Tone

The continuous and passive partial contraction of the muscles, which helps maintain posture.

Comparator

In general terms, a device or system that compares two items or signals and determines their relationship or difference.

Intended Movements

Movements that are planned or decided upon before they are executed, involving cognitive processes.

Sensory Stimuli

External or internal factors that can elicit a response from sensory organs, leading to a sensation.