Ice Movement (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What force causes ice to start moving downhill when it builds up and becomes deeper?
What force causes ice to start moving downhill when it builds up and becomes deeper?
Gravity
What happens in the upper rigid zone of a glacier?
What happens in the upper rigid zone of a glacier?
Ice is brittle and forms crevasses
During internal deformation, what happens to ice crystals?
During internal deformation, what happens to ice crystals?
They orientate in movement direction
Where does rotational flow occur in a glacier?
Where does rotational flow occur in a glacier?
In the corrie (cirque)
When does compressional flow occur?
When does compressional flow occur?
When the gradient reduces
What is a bergschrund?
What is a bergschrund?
A large crevasse at glacier head
What role does meltwater play in basal sliding?
What role does meltwater play in basal sliding?
It acts as a lubricant
How fast can a glacier move during a surge?
How fast can a glacier move during a surge?
250-300 metres per day
Why does centre surface ice move faster than the sides and base?
Why does centre surface ice move faster than the sides and base?
It experiences less resistance
Where does ice erosion reach its maximum intensity?
Where does ice erosion reach its maximum intensity?
During compressional flow