The form one students to Hale hydroelectric power station where they observed falling water in the river course disturbed by a steep flow of water which cause the water wheel to rotate
(a)name the feature with a steep gradient the student observed
(b) describe the feature named in (a)
(c) describe the feature named in (a) can be formed where a layer of resistant rock lies horizontally across the river channel
ANSWER
(a) The feature with a steep gradient that the Form One students observed is a waterfall.
(b) A waterfall is a geological feature where water flowing in a river course abruptly falls vertically or nearly vertically due to a steep descent or a sudden change in gradient. It is characterized by the water cascading over a cliff or rock ledge, creating a dramatic and often picturesque display. The steep flow of water in a waterfall is caused by the force of gravity acting on the river’s descent.
(c) The feature named in (a), a waterfall, can be formed where a layer of resistant rock lies horizontally across the river channel. When a river encounters a band of hard or resistant rock, such as limestone or granite, it erodes the softer rock layers around it more quickly. Over time, this differential erosion leads to the formation of a vertical or near-vertical drop as the resistant rock layer remains intact while the surrounding softer rock is worn away. This process creates a distinctive feature known as a waterfall.
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