This question was very unpopular with the candidates. The expected answers are:
Characteristics of caves
- A cave is a hole on an adjoining coast;
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It is an arch-shaped feature;
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It is a feature of marine erosion;
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Usually contains a hole torn through the cave roof;
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The holes on the cave roof is called gloup or blow hole;
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A steep-side inlet called geo results from collapsed roof .
Formation of caves
- Produced by prolonged wave attack on the areas of weak or less resistant rocks at the base of a cliff;
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The prolonged pounding excavates holes called caves;
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Continued wave action widens and expands the cave due to alternate contraction and expansion of air within the cave;
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The cave roof collapses to form a steep-sided inlet called geo.
Characteristics of beaches
- A beach is the area of sloping ground along a coast between the high and low tides;
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A beach is a depositional feature of the wave;
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It consists of accumulations of sand, shingle and mud type of materials deposited;
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There are shingle, pebble and sand beaches;
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Bar Beach (Lagos) is a good example of beach.
Formation of beaches
- It is caused by wave action;
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Weathered sand and gravel are moved by wave;
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They are deposited along the shore;
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The strong swash of the constructive wave usually pushes the coarsest materials off the beach;
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The finer materials usually occur along the seaward edge of the beach.
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