Name one feature formed by river deposition and explain with the aid of a labelled diagram, how it was formed.
- Junior Cycle Geography - Question C - 2008
Question C
Name one feature formed by river deposition and explain with the aid of a labelled diagram, how it was formed.
Worked Solution & Example Answer:Name one feature formed by river deposition and explain with the aid of a labelled diagram, how it was formed.
- Junior Cycle Geography - Question C - 2008
Step 1
Feature formed by river deposition
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Answer
One significant feature formed by river deposition is a delta. Deltas occur where a river meets a standing body of water, such as a lake or ocean. As the river slows down, it loses energy and can no longer carry its sediment load, leading to the deposition of materials.
Step 2
Labelled diagram
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Answer
As the river approaches the body of water, its velocity decreases dramatically. This reduction in kinetic energy causes the sediment that the river has been transporting to settle onto the riverbed. The accumulated sediment forms the basis of the delta, gradually building it outward into the water.
Step 4
Explanation of formation (2)
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Answer
Over time, as more sediment is deposited, the delta expands and can develop various channels and landforms. The size and shape of the delta will evolve based on factors like sediment supply, water flow, and tidal actions from the nearby body of water.
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