Lesson 1.1.2.4

1.1.2.4 How does human activity cause change within glaciated and periglacial landscape systems? Quiz: OCR Geography, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

In partnership with Revision Ninja

Lesson 1.1.2.4, How does human activity cause change within glaciated and periglacial landscape systems?: 20 multiple choice questions for the OCR Geography (H481), Unit 1: Landscape Systems, written with Revision Ninja.

Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.

Host this setFree Play

The 20 questions

  1. Which human activity is the primary driver of landscape change in periglacial North Slope, Alaska?

    • Oil extraction
    • Wind farming
    • Forestry logging
    • Bauxite mining

  2. What process is directly accelerated by thermal radiation from uninsulated buildings on permafrost?

    • Frost heave
    • Glacial plucking
    • Permafrost thawing
    • Solifluction stopping

  3. Which landscape feature forms when widespread thawing of permafrost causes uneven ground collapse?

    • Roche moutonnée
    • Thermokarst
    • Arête network
    • Drumlin field

  4. Why are sections of the Trans-Alaska Pipeline elevated above the ground surface?

    • Avoid glacier advancement
    • Prevent permafrost thawing
    • Prevent wind erosion
    • Stop river flooding

  5. What effect does gravel extraction from periglacial river beds have on sediment flow?

    • Depletes sediment supply
    • Prevents river scour
    • Stops channel erosion
    • Increases bedload supply

  6. What primary landform modification occurs when permafrost beneath a pingo melts completely?

    • Striation pattern
    • Esker ridge construction
    • Ground collapse crater
    • Roche moutonnée formation

  7. What is the main reason for constructing large dams in high alpine glaciated valleys?

    • Tidal energy capture
    • Hydroelectric power generation
    • Arable crop irrigation
    • Geothermal steam production

  8. How do dam reservoirs in glaciated valleys impact the downstream transport of sediment?

    • Increasing downstream bedload
    • Accelerating moraine formation
    • Eliminating channel scour
    • Trapping sediment upstream

  9. What process increases directly downstream of a dam due to sediment-starved clear water?

    • Channel scour
    • Glacial deposition
    • Frost shattering
    • Sediment deposition

  10. How does dam regulation typically alter seasonal meltwater discharge downstream in glaciated valleys?

    • Increases summer floods
    • Reduces peak flows
    • Doubles annual discharge
    • Stops winter flow

  11. What happens to a glacier when total annual accumulation exceeds total annual ablation?

    • Zero mass balance
    • Negative mass balance
    • Dynamic equilibrium loss
    • Positive mass balance

  12. What term describes the line on a glacier where annual accumulation equals annual ablation?

    • Equilibrium line
    • Solifluction boundary
    • Trim line
    • Terminus line

  13. What is the net mass balance of a glacier gaining 5 metres and losing 7 metres annually?

    • -2 metres
    • -12 metres
    • +2 metres
    • +12 metres

  14. What is the effect of artificial snowmaking on local hydrological inputs in alpine ski resorts?

    • Reduces groundwater storage
    • Increases water abstraction
    • Eliminates winter snowpack
    • Decreases river runoff

  15. What happens to glacier surface albedo when dark soot and dust accumulate on the ice?

    • Albedo remains constant
    • Albedo increases
    • Albedo decreases
    • Albedo doubles

  16. How does permafrost degradation affect the stability of active solifluction slopes?

    • Eliminates surface water
    • Increases slope instability
    • Prevents mass movement
    • Stabilises soil layers

  17. What calculation measures the difference between total sediment inputs and sediment outputs in a glacial valley?

    • Hydraulic radius
    • Sediment budget
    • Mass balance
    • Cross-sectional area

  18. How does building urban infrastructure on permafrost alter the ground surface energy balance?

    • Increases ground albedo
    • Increases heat absorption
    • Reduces geothermal heat
    • Decreases thermal conductivity

  19. What valley floor change is commonly observed downstream of major alpine dam developments?

    • Glacier advance
    • Valley aggradation
    • River bed lowering
    • Moraine accumulation

  20. What happens to the periglacial active layer thickness when surface tundra vegetation is cleared?

    • It freezes permanently
    • It decreases
    • It increases
    • It remains unchanged

All OCR Geography quizzes