Multiple choice

Which of the following statements is/are correct? a. Drumlins are smooth oval shaped ridge-like features composed mainly of glacial till with some masses of gravel and sand. b. The drumlins form due to dumping of rock debris beneath heavily loaded ice through fissures in the glacier. c. Drumlins give an indication of the speed of glacier movement.

  1. Only a

  2. Only b

  3. Only c

  4. Only a and b

  5. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer,  as both these statements are correct. Drumlins are smooth oval shaped ridge-like features composed mainly of glacial till with some masses of gravel and sand. The long axes of drumlins are parallel to the direction of ice movement. The drumlins form due to dumping of rock debris beneath heavily loaded icethrough fissures in the glacier. The stoss end gets blunted due to pushing by moving ice. Drumlins give an indication of direction of glacier movement.

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