Erosional proccesses and parts of a glacier

Question 1

Plucking

Answer 1

When meltwater from aglacier freezes to the base rock and cracke dand broken rock. When the ice advances downhill, rock is plucked from the backwall

Question 2

Abrasion

Answer 2

When rocks which have frozen to the base and the back of the glacier scrapes the bedrock

Question 3

Freezethaw

Answer 3

When the meltwater or rain gets get into cradks in the bedrock (usually the backwall). At the the water freezes, expands and causes the crack to get larger. Eventually, the rock will break away