Glaciers and Ice Caps

Active learning helps students grasp the slow but powerful processes of glaciers and ice caps, which are difficult to visualize from static images alone. Through hands-on modeling, simulation, and mapping, students directly observe how ice shapes Earth's surface, making abstract concepts concrete and memorable.

• Grade 8
• Science
• 4 activities
• 30 min–45 min

Learning Objectives

1. Explain the physical processes involved in the formation of glacial ice from snow.
2. Analyze the forces driving glacial movement and the resulting erosional and depositional landforms.
3. Compare the impact of glacial meltwater on sea level rise with other factors contributing to rising oceans.
4. Predict the long-term effects of ice cap retreat on global climate patterns and coastal ecosystems.

Case Study Analysis

⏱ 35 min·Small Groups

Hands-On: Glacier Erosion Model

Students mix flour, water, and sand to create 'glacial ice' dough. Place it on a wooden incline sprinkled with sand as bedrock, add weights to simulate flow, and tilt to observe erosion and deposition. Groups sketch before-and-after landscapes and measure debris movement.

Prepare & details

Explain the processes of glacier formation and movement.

Facilitation Tip: For the Glacier Erosion Model, circulate with a ruler to prompt students to measure and compare erosion rates on different inclines.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Simulation Game

⏱ 45 min·Pairs

Simulation Game: Ice Cap Melting

Fill trays with clay 'land' and water 'ocean,' add land-based ice caps marked with dye. Use heat lamps to melt ice gradually, measure water level rise, and compare to floating ice control. Record data in tables and graph results.

Prepare & details

Analyze how glaciers reshape Earth's surface over time.

Facilitation Tip: During the Ice Cap Melting simulation, assign roles so one student tracks water volume while another notes melting patterns for shared analysis.

Setup: Flexible space for group stations

Materials: Role cards with goals/resources, Game currency or tokens, Round tracker

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Concept Mapping

⏱ 40 min·Pairs

Concept Mapping: Glacial Landforms Hunt

Provide topographic maps or Google Earth access focused on Canadian regions. Pairs identify and label features like eskers and kettles, then create a class mural annotating formation processes. Discuss evidence of past glaciations.

Prepare & details

Predict the consequences of widespread glacier and ice cap melting.

Facilitation Tip: In the Glacial Landforms Hunt, provide a checklist of landforms with blanks for sketches to guide systematic observation.

Setup: Tables with large paper, or wall space

Materials: Concept cards or sticky notes, Large paper, Markers, Example concept map

• Understand
• Analyze
• Create
• Self-Awareness
• Self-Management

Timeline Challenge

⏱ 30 min·Small Groups

Timeline Challenge: Glacier History

Groups research key events in glacial advance and retreat using provided timelines. Arrange cards chronologically on a wall, adding cause-effect arrows for climate drivers. Present one segment to the class.

Prepare & details

Explain the processes of glacier formation and movement.

Facilitation Tip: For the Glacier History timeline, limit events to 5 per student to focus on key patterns rather than exhaustive detail.

Setup: Long wall or floor space for timeline construction

Materials: Event cards with dates and descriptions, Timeline base (tape or long paper), Connection arrows/string, Debate prompt cards

• Remember
• Understand
• Analyze
• Self-Management
• Relationship Skills

Teaching This Topic

Teach this topic by starting with students' local geography to build relevance, then moving to hands-on modeling to make invisible processes visible. Avoid over-reliance on videos or diagrams alone, as glaciers' slow movement can be hard to grasp without tactile experience. Research shows that combining kinesthetic activities with mapping tasks improves spatial reasoning and retention of glacial processes.

What to Expect

Successful learning looks like students accurately describing glacial flow, erosion, and landform creation, connecting these processes to real landscapes in Canada and beyond. They should use precise vocabulary and explain cause-effect relationships in discussions and written work.

Watch Out for These Misconceptions

Common Misconception

During the Glacier Erosion Model, watch for students describing glaciers as 'frozen blocks' that do not move.

What to Teach Instead

Ask students to mark their dough with a toothpick every 2 minutes to observe and measure incremental movement down the incline, linking this to gravity-induced flow.

Common Misconception

During the Ice Cap Melting simulation, watch for students arguing that melting sea ice will raise sea levels.

What to Teach Instead

Have students compare water displacement in two trays: one with ice floating in water and one with ice resting on soil, then measure volume changes to see how land-based ice contributes to sea level rise.

Common Misconception

During the Glacial Landforms Hunt, watch for students assuming glaciers only exist in polar regions.

What to Teach Instead

Provide a map with labeled mountain ranges and ask students to plot glaciers they locate, using Canada’s Rockies as a starting point to confront this assumption with evidence.

Assessment Ideas

Quick Check

After the Glacial Landforms Hunt, present images of different landforms and ask students to identify them and explain the glacial process responsible, using vocabulary from the activity.

Discussion Prompt

During the Ice Cap Melting simulation, ask students to discuss the two most significant global consequences of Greenland’s ice melting, supporting predictions with data from their volume measurements and prior knowledge.

Exit Ticket

After the Glacier Erosion Model, have students write a paragraph explaining how gravity causes glaciers to move and one way this movement reshapes the land, using at least two key vocabulary terms from the activity.

Extensions & Scaffolding

• Challenge: Ask students to predict how a glacier’s speed might change if bedrock friction decreases, then test this using their dough models with added lubricants like oil.
• Scaffolding: Provide pre-labeled diagrams of landforms for students to match with their sketches during the Glacial Landforms Hunt.
• Deeper exploration: Have students research and present on how Indigenous communities in glaciated regions use knowledge of ice patterns for travel or resource gathering.

Key Vocabulary

firn	Granular snow that has been compressed and partially melted and refrozen, forming an intermediate stage between snow and glacial ice.
glacial abrasion	The process by which glaciers grind, scrape, and polish the bedrock beneath them using embedded rock fragments, creating distinctive erosional features.
till	Unsorted, unstratified sediment deposited directly by glacial ice, often forming features like moraines.
calving	The process by which icebergs break off from larger glaciers or ice shelves and fall into the ocean, a significant factor in ice loss.