reasons for speed of glacier

Question 1

name factors affecting rate of movement

Answer 1

• altitude = more likely to be cold but more potential energy so can move quicker
  -basal temp = meltwater at base can act as lubricant - glacier could be frozen to bedrock
  -slope = steeper slopes mean gravity’s pull is stronger
  -lithology = type of rock effects movement, more easily eroded rock can create deformations, slowing rate
  -size and variations in mass balance = thicker glaciers move slower due to larger mass, meaning more friction and pressure