2.1 Glaciated Landscapes and Change

• Cirques are bowl-shaped depressions formed by glacial erosion at the head of a valley
• Moraines are ridges of debris deposited by a glacier, often at its edges or its end
• Arêtes are formed by glaciers meeting from the same direction.

  False
• What are erratics in glaciated landscapes?

  Large boulders transported by glaciers
• Plucking creates bowl-shaped depressions known as cirques
• Arêtes are sharp, jagged ridges formed by the erosion of glaciers meeting from different directions
• Erratics are large boulders transported and deposited by a glacier, often far from their original location.


  True
• Cirques are bowl-shaped depressions formed by glacial erosion through plucking and abrasion
• Steps in the formation of an arête

  1️⃣ Glacial erosion from two cirques

  2️⃣ Meeting of glaciers from different directions

  3️⃣ Formation of a sharp, jagged ridge
• Match the depositional landform with its formation process:

  Moraines ↔️ Deposition of glacial till at glacier edges

  Erratics ↔️ Deposition after glacial retreat

  Drumlins ↔️ Shaping under glacial ice
• What are glaciated landscapes characterized by?

  Erosional and depositional landforms
• How are pyramidal peaks formed?

  Glaciers meeting from multiple directions
• Drumlins are elongated hills formed by glacial deposition.


  True
• What is formed by abrasion from multiple glaciers meeting at a point?

  Sharp, jagged arêtes
• Pyramidal peaks are steep-sided, pointed mountain peaks formed by the erosion of glaciers meeting from multiple directions.


  True
• Match the depositional landform with its description:

  Moraines ↔️ Ridges of debris deposited by a glacier

  Erratics ↔️ Large boulders transported by glaciers

  Drumlins ↔️ Streamlined hills of glacial sediment
• Pyramidal peaks are formed by the erosion of glaciers radiating from a single peak.


  True
• Glacial erosion is driven by two main processes: plucking and abrasion.


  True
• Erratic deposition occurs when large boulders are transported by glaciers and deposited far from their origin.

  True
• Climate change leads to glacier melt, contributing to sea level rise and altered water resources.


  True
• Processes involved in glacial erosion

  1️⃣ Plucking dislodges bedrock

  2️⃣ Abrasion grinds down bedrock
• Match the glacial landform with its description:

  Cirques ↔️ Bowl-shaped depressions

  Arêtes ↔️ Sharp ridges between cirques

  Moraines ↔️ Ridges of glacial debris
• Moraines are ridges of debris deposited by a glacier at its edges or end
• Steps in the formation of a cirque

  1️⃣ Glacial erosion through plucking

  2️⃣ Glacial abrasion of bedrock

  3️⃣ Formation of a bowl-shaped depression
• Moraines are formed by the deposition of glacial till
• Lateral moraines are formed at the edges of a glacier, while terminal moraines are formed at its end
• Drumlins are elongated, streamlined hills of glacial sediment