Glaciation & Glacial Processes (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 causes glaciers to move downslope?
What causes glaciers to move downslope?
Gravity & pressure of their own weight
When do glaciers form?
When do glaciers form?
When accumulation exceeds melting rate
What causes friction in basal sliding?
What causes friction in basal sliding?
Weight of ice on bedrock contact
What does friction produce in basal sliding?
What does friction produce in basal sliding?
Heat
What role does meltwater play in basal sliding?
What role does meltwater play in basal sliding?
Acts as a lubricant
What happens to ice particles in plastic flow?
What happens to ice particles in plastic flow?
They bend & flow over uneven rock surfaces
What can ice crystals do in plastic flow?
What can ice crystals do in plastic flow?
Creep past each other
How does plastic flow compare in speed to basal sliding?
How does plastic flow compare in speed to basal sliding?
Much slower than basal sliding