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4.4 - River Valleys

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✅EvaluateQuestion 1 of 21

Rivers erode valleys as they flow towards the:

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✅EvaluateQuestion 2 of 21

A narrow valley with steep sides and a small stream is most typical of the river’s:

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✅EvaluateQuestion 3 of 21

The valley shape most commonly associated with the upper course is a:

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✅EvaluateQuestion 4 of 21

Which landform is formed when a young river winds around ridges projecting into the valley?

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✅EvaluateQuestion 5 of 21

A very wide, flat valley floor beside a river is called a:

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✅EvaluateQuestion 6 of 21

A winding bend in a river channel is known as a:

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✅EvaluateQuestion 7 of 21

Natural levees form when floodwater:

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✅EvaluateQuestion 8 of 21

Which statement best explains why V-shaped valleys develop near a river’s source?

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✅EvaluateQuestion 9 of 21

In the middle course, meanders become more common mainly because:

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✅EvaluateQuestion 10 of 21

On a meander, the outer bank is usually a river cliff because:

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✅EvaluateQuestion 11 of 21

After heavy rainfall in Dominica, a river cuts rapidly into bedrock and forms a very steep-sided valley. This landform is most likely a:

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✅EvaluateQuestion 12 of 21

Which set correctly matches river course to a likely landform?

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✅EvaluateQuestion 13 of 21

A river valley becomes wider downstream mainly because:

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✅EvaluateQuestion 14 of 21

A student visits two sites on the same river. Site X has a gradient of 18°, boulders in the channel, and a narrow V-shaped valley. Site Y has a gradient of 1°, wide flat land, and large bends. Which pair best matches the sites to river courses?

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✅EvaluateQuestion 15 of 21

Which sequence best describes how a river valley typically changes from source to mouth?

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✅EvaluateQuestion 16 of 21

A meander loop in Trinidad becomes very narrow at the neck after several floods. What is the MOST likely outcome if the river breaks through the neck during high discharge?

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✅EvaluateQuestion 17 of 21

Which set of statements is correct? 1. Interlocking spurs are common in youthful upper-course valleys. 2. River cliffs form on the outer bend of meanders. 3. Floodplains are formed mainly by deposition during floods. 4. Vertical erosion dominates in the lower course.

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✅EvaluateQuestion 18 of 21

A community plans housing on a wide valley floor near a river in Guyana. Which evidence BEST suggests the site is on a floodplain and therefore more flood-prone?

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✅EvaluateQuestion 19 of 21

Two rivers have the same discharge (m³/s), but River A flows down a steep mountain valley while River B crosses a flat coastal plain. Which statement is most accurate about valley shaping?

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✅EvaluateQuestion 20 of 21

A student writes: “A wide valley with levees must be the middle course.” What is the best correction?

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✅EvaluateQuestion 21 of 21

What is the best summary of how rivers carve valleys as they flow to the sea?

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✅EvaluateQuestion 1 of 21

Rivers erode valleys as they flow towards the:

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