The glacial feature shaped like a half-boiled egg is called?

The glacial feature shaped like a half-boiled egg is called?

• A. Drumlin
• B. Moraine
• C. Esker
• D. Wrack

Answer: (A)

Understanding how glaciers sculpt the land helps explain why a half-egg shape points to a drumlin. A drumlin is an elongated hill of compacted glacial till that forms beneath a moving glacier, with a blunt, rounded end facing the direction of ice flow and a tapered, downstream end. That distinct egg-like streamline is the hallmark that sets drumlins apart from other glacial features like moraines (irregular ridges of till deposited at the glacier’s margins) or eskers (snake-like ridges formed by subglacial meltwater channels). Wrack isn’t a standard glacial landform, so it doesn’t match this shape. The combination of the streamlined, egg-shaped form and the orientation relative to the ice flow is why drumlin is the best fit.

Understanding how glaciers sculpt the land helps explain why a half-egg shape points to a drumlin. A drumlin is an elongated hill of compacted glacial till that forms beneath a moving glacier, with a blunt, rounded end facing the direction of ice flow and a tapered, downstream end. That distinct egg-like streamline is the hallmark that sets drumlins apart from other glacial features like moraines (irregular ridges of till deposited at the glacier’s margins) or eskers (snake-like ridges formed by subglacial meltwater channels). Wrack isn’t a standard glacial landform, so it doesn’t match this shape. The combination of the streamlined, egg-shaped form and the orientation relative to the ice flow is why drumlin is the best fit.