"Geography - Glaciers"

Geography is fun

• Freeze-thaw weathering

A process where water enters cracks in rocks, freezes and expands, causing the rock to break apart.

• Striations

Scratches or grooves carved into bedrock by rocks embedded in moving glaciers.

• V-shaped valley

A steep-sided valley shaped by river erosion, typically found in upland areas.

• Ice Sheet

A massive, continental-scale glacier covering over 50,000 square kilometers.

• Plucking

A glacial process where rocks are lifted and removed from the ground by moving ice.

• Abrasion

The scraping and wearing away of rock surfaces by debris carried in glaciers.

• Scree

Loose rock fragments that accumulate at the base of cliffs or steep slopes due to weathering.

• U-shaped valley

A broad valley with a flat floor and steep sides, formed by glacial erosion.

• Moraine

A ridge or mound of debris (till) deposited by a glacier.

• Interglacial

A warmer period between ice ages when glaciers retreat and climates become milder.