AQA A-Level Geography 7037
Water and Carbon Cycles
Hot Desert Systems and LandscapesLandscape
Coastal Systems and LandscapesLandscape
Glacial Systems and LandscapesLandscape
HazardsHazards or ecosystems
Ecosystems Under StressHazards or ecosystems
Global Systems and Global Governance
Changing Places
Contemporary Urban EnvironmentsHuman option
Population and the EnvironmentHuman option
Resource SecurityHuman option
Water and Carbon Cycles
Precipitation and Cryospheric Processes
- 2 things to know
- Component 1
Overview
Recall questions on frontal, orographic and convectional precipitation, and on accumulation and ablation in the cryosphere.
What you need to know
Answer each one before you reveal it.
How do cryospheric processes affect river regimes at the drainage basin scale?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Explain how frontal precipitation occurs.
Model answer
Warm air is forced to rise over denser cold air at a weather front, causing cooling, condensation and precipitation.
- 2
What causes orographic precipitation?
Model answer
Air is forced to rise over a topographic barrier such as a mountain range, cooling and condensing.
- 3
Describe the mechanism of convectional precipitation.
Model answer
Intense surface heating causes air to rise rapidly, cool and condense, producing precipitation.
- 4
What is accumulation in cryospheric terms?
Model answer
The addition of snow and ice to a glacier or ice mass.
- 5
Define ablation.
Model answer
The loss of ice and snow through melting, sublimation and calving.
- 6
Name three cryospheric processes that operate at the hillslope scale.
Model answer
Seasonal snow accumulation and melt, frost heave and solifluction.
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