(a)Lst five landforms found in the upper course of a river. (b) Highlight three differences and two Similarities between an alluvial fan and a delta.

Assessment: WAEC SSCE - Geography - 2020 (Practical and Physical Geography) Subject: Geography

Question 1 Report

(a)Lst five landforms found in the upper course of a river.
(b) Highlight three differences and two Similarities between an alluvial fan and a delta.

Answer

Alluvial fan	Delta
Forms on land, where a river leaves a steep highland and reaches a plain.	Forms at the mouth of a river, where it enters a sea or lake.
Deposition is caused by a sudden reduction in gradient/slope.	Deposition is caused by the check of the current on meeting standing water and flocculation.
Built of coarser materials (gravel, sand) and is usually cone-shaped in profile.	Built of finer materials (silt, mud, clay) and is often triangular or bird-foot in plan.

Alluvial fan	Delta
Forms on land, where a river leaves a steep highland and reaches a plain.	Forms at the mouth of a river, where it enters a sea or lake.
Deposition is caused by a sudden reduction in gradient/slope.	Deposition is caused by the check of the current on meeting standing water and flocculation.
Built of coarser materials (gravel, sand) and is usually cone-shaped in profile.	Built of finer materials (silt, mud, clay) and is often triangular or bird-foot in plan.

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