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Doctors Medicines MCQs Q&A

  1. River
  2. Wave
  3. Limestone
  4. Wind
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1 Answers

Option 2 : Wave

The correct answer is Wave.

  • Caves, arches, stacks and stumps are erosional features that are commonly found on a headland and are the landscape features of waves. Hence Option 2 is correct.
  • A headland, also known as a head, is a coastal landform, a point of land usually high and often with a sheer drop, that extends into a body of water.
  • Weathering and erosion can create caves, arches, stacks and stumps along a headland.
  • Caves occur when waves force their way into cracks in the cliff face.
  • The water contains sand and other materials that grind away at the rock until the cracks become a cave. Hydraulic action is the predominant process.
  • If the cave is formed in a headland, it may eventually break through to the other side forming an arch.
  • The arch will gradually become bigger until it can no longer support the top of the arch. When the arch collapses, it leaves the headland on one side and a stack (a tall column of rock) on the other.
  • The stack will be attacked at the base in the same way that a wave-cut notch is formed. This weakens the structure and it will eventually collapse to form a stump.
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Related Questions

In the following question, the 1st and the last part of the sentence/passage are numbered 1 and 6. The rest of the sentence/ passage is split into four parts and named P, Q, R and S. These four parts are not given in their proper order. Read the sentence/ passage and find out which of the four combinations is correct. 1. More than half of the world’s population lives in urban areas. P. Due to the ongoing urbanisation and growth of the world’s population, there will be about 2.5 billion more people added to the urban population by 2050. Q. The world’s urban areas are highly varied, but many cities and towns are facing problems such as a lack of jobs, R. homelessness and expanding squatter settlements, inadequate services and infrastructure, poor health and educational services and high levels of pollution. S. This will mainly happen in Africa and Asia. 6. The situation is expected to get worse.?
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