Glacial Features and Processes

The video explains glaciers, their types, formation, and components. It covers glacier dynamics, including growth and retreat, and details erosion processes like plucking and abrasion. The video also describes deposition features such as moraines and erratics, and explores various landforms created by glaciers, including u-shaped valleys, fjords, and hanging valleys.

What percentage of Earth's ice is contained in continental glaciers?

• 50%

• 100%

• 75%

• 95%

What is the term for the area of a glacier where snow accumulates?

• Snout

• Terminus

• Zone of Ablation

• Zone of Accumulation

What happens to a glacier when the rate of melting exceeds the rate of ice formation?

• It splits

• It advances

• It remains stable

• It retreats

What is the main erosive process of a glacier called?

• Abrasion

• Plucking

• Calving

• Freezing

What is the term for the process where glaciers break into smaller sections?

• Erosion

• Calving

• Abrasion

• Plucking

What are the long dark bands of debris on glaciers called?

• Erratics

• Drumlins

• Tarns

• Moraines

What is an erratic in glacial terms?

• A sharp ridge

• A type of moraine

• A boulder transported by a glacier

• A small glacial lake

What type of valley is typically carved out by glaciers?

• V-shaped valley

• U-shaped valley

• Flat valley

• Hanging valley

What is a corrie, also known as a cirque?

• A sharp ridge

• A type of moraine

• A rounded hollow with a steep back wall

• A glacial lake

What is the term for a narrow ridge formed between two corries?

• Fjord

• Erratic

• Drumlin

• Arete