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WAEC Geography 1991 (August) Question 15

Question 15

Earth Movements and Vulcanicity

Which of the following statements is not correct?

  1. A.Igneous rocks are formed by the cooling and solidification of magma
  2. B.Magma is erupted from the interior of the earth
  3. C.When magma solidifies on the surface of the earth, it is called intrusive rock
  4. D.Magma contains no fossils
  5. E.Magma does not occur in layers
Show the answer and explanation

Answer: C (When magma solidifies on the surface of the earth, it is called intrusive rock)

Explanation

Magma that solidifies at the surface forms extrusive (volcanic) rock; intrusive rock forms underground.