GEOLOGY

EARTH SCIENCE

GROUNDWATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Meanders are ____ on a river that is in its mature transportation stage.
A
triangular deposition features
B
curves
C
straight raceways
D
never
Explanation: 

Detailed explanation-1: -Meanders are bends or curves which are found in the mature stage (middle course) of a river. As the land is much flatter than it was in the youthful stage the river tends to swing from side to side.

Detailed explanation-2: -In the middle course of a river, meanders are formed. Meanders are typical landforms found in the river stage where river erosion changes from vertical to lateral erosion.

Detailed explanation-3: -In the mature stage of the river formation, the speed of the river reduces and which leads to reduced vertical cutting and instead there is the greater widening of the river. The deposition of the sediments in the mature stage leads to the formation of the flood plains as well.

Detailed explanation-4: -Meanders are curves in the middle-lower course of a river. A meander forms as a watercourse erodes the sediments of an outer, concave bank and deposits sediments on an inner, convex bank (point bar), leading to a meandering channel.

Detailed explanation-5: -Mature River: Characterized by a valley with a wide floor and flaring sides, by advanced headward erosion by tributaries, and by a more smoothly graded bed. Meanders may be present though they are not as pronounced as in Old Age Rivers.

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