Examkin

Question

Difficulty: MediumLandform Development by Wind Action and Glaciation

Which of the following landforms is formed by glacial deposition and is characterized as an elongated, streamlined, teardrop-shaped hill of unsorted till with its blunt end pointing towards the direction of ice advance?

  1. DrumlinAnswer
  2. B
    Roche moutonnée
  3. C
    Oxbow lake
  4. D
    Scree slope

Answer

Drumlin
The correct answer is the drumlin. Drumlins are smooth, elongated, teardrop-shaped hills of unstratified glacial till deposited and shaped under moving ice. The steep, blunt end (stoss side) faces the direction from which the glacier advanced, while the gently sloping tail (lee side) points in the direction of ice movement.

Step-by-Step Solution

1
Identify the primary agent and process specified in the stem
The landform is formed by glacial deposition (ice carrying and dropping sediment).
Differentiating between erosional and depositional features narrows down glacial landform classifications.
2
Analyze the physical shape and orientation of the landform described
An elongated, teardrop-shaped hill composed of unsorted till with a steep blunt stoss side facing ice advance and a tapered lee side.
This specific morphology uniquely identifies a drumlin.
3
Distinguish from non-glacial and erosional distractors
Roche moutonnée is erosional, oxbow lake is fluvial, and scree slope is caused by weathering and mass wasting.
Eliminating features of other geological agents confirms the correct answer.

Key Concept

Glacial Depositional Landforms (Drumlins)
Estimated Time:50s
Rate this question

Topics

Landform Development by Wind Action and Glaciation

More questions from this topic