P1C 07 Glacial Landscape Features

Front

What is glacial erosion?

Back

Glacial erosion is the removal of material by a glacier.

Front

What factors influence the rate and amount of glacial erosion?

Back

Local geology, glacier size, and material within the glacier.

Front

How does local geology affect glacial erosion?

Back

Soft bedrock is easier to erode than harder rocks.

Front

How does glacier size affect glacial erosion?

Back

Large glaciers can erode a larger area.

Front

What role does material within the glacier play in erosion?

Back

Rocks and sand within the glacier work like sandpaper to erode rock.

Front

What are the two primary mechanisms of glacial erosion?

Back

Abrasion and plucking.

Front

What is abrasion in the context of glacial erosion?

Back

Abrasion occurs when rocks frozen within the ice are dragged over bedrock, wearing it away like sandpaper.

Front

What are striations?

Back

Striations are lines or grooves on the bedrock surface, representing abrasion.

Front

What is plucking in glacial erosion?

Back

Plucking happens when rocks stuck to the ice are pulled out and moved by the glacier.

Front

What is freeze-thaw weathering?

Back

A process where water in rock cracks freezes, expands, and breaks the rock.