At what depth or thickness of ice does glacial ice make the transition from brittle fracture to plastic flow?
A)1 metre
B)5 metres
C)10 metres
D)50 metres

Question

Quizplus · Accepted Answer

The transition from brittle fracture to plastic flow occurs at a depth or thickness of 50 meters of ice in glacier. This is because at this depth, the weight of the overlying ice causes pressure that allows the ice to deform plastically rather than breaking brittlely under stress.

At What Depth or Thickness of Ice Does Glacial Ice