Glacial Ice Formation (Leaving Cert Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is glaciation?
What is glaciation?
Spread of large ice masses over land & sea
What are glaciers?
What are glaciers?
Rivers of ice that move slowly
What forces cause glaciers to move downslope?
What forces cause glaciers to move downslope?
Gravity & pressure of their own weight
When do glaciers form?
When do glaciers form?
When accumulation exceeds melting rate
In basal sliding, what causes friction?
In basal sliding, what causes friction?
Weight of ice against bedrock
What does friction cause in basal sliding?
What does friction cause in basal sliding?
Heat & meltwater layer formation
What role does meltwater play in basal sliding?
What role does meltwater play in basal sliding?
Acts as a lubricant
What happens in plastic flow?
What happens in plastic flow?
Ice particles bend & flow over rock
How do ice crystals behave in plastic flow?
How do ice crystals behave in plastic flow?
They creep past each other
How does plastic flow compare to basal sliding in speed?
How does plastic flow compare to basal sliding in speed?
Much slower than basal sliding