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WAEC Geography 2019 Question 31

Question 31

Weather

If the temperature reading at an observatory located on top of a dormant volcano is 6°C, what will be the temperature at the bottom of the volcano if the observatory is 3,000 metres from the surrounding lowland?

  1. A.5.5°C
  2. B.13.5°C
  3. C.25.5°C
  4. D.35.5°C
Show the answer and explanation

Answer: C (25.5°C)

Explanation

Temperature rises 6.5°C per 1,000 m going down: 3 × 6.5 = 19.5°C, so 6 + 19.5 = 25.5°C.