Question

Which landform is formed when the glacier cuts a U-shaped valley by abrasion?

• A. Fjords
• B. Corris
• C. Aretes
• D. Butte

Hint:

• Glaciers transform V-shaped river valleys into U-shaped valleys through erosion processes like abrasion and plucking.
• A fjord is a U-shaped glacial valley that has been inundated by the sea after the glacier retreated.
• Corries (cirques) are armchair-shaped hollows at the head of a glacier.
• Arêtes are sharp ridges between glacial valleys or cirques.
• Buttes are erosional landforms typically found in arid regions.

Answer 1

The Correct Option is A

Glaciers are powerful agents of erosion that can carve distinct landforms through processes like abrasion. When a glacier moves through a valley, it can create a U-shaped valley by eroding the valley walls and floor. This distinct U-shape is different from the typical V-shape of river valleys and is a hallmark of glacial erosion.

Fjords are formed when these glacial valleys are submerged by the sea, creating deep, steep-sided inlets. As glaciers retreat, the sea floods into the depression, transforming it into a fjord.

Given the options:

• Fjords
• Corris
• Aretes
• Butte

The correct answer is Fjords. This is because they are specifically the result of glacial processes that create U-shaped valleys which become flooded by seawater.