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
Global Systems and Global Governance
The Physical Character of Antarctica
- 3 things to know
- Component 2
Overview
Recall questions on why the continent is the coldest, driest and windiest, and on its unusually high average elevation.
What you need to know
Answer each one before you reveal it.
What proportion of the world's fresh water is stored in Antarctica's ice sheets?
How does cold dense air form over the Antarctic ice sheet to initiate katabatic winds?
Questions from this subtopic
Each one with the model answer underneath.
- 1
Why is Antarctica described as the coldest continent on Earth?
Model answer
Antarctica has the lowest recorded temperatures of any continent, with interior winter temperatures dropping below -60°C due to its high latitude, elevation, and ice-covered surface reflecting solar radiation.
- 2
What makes Antarctica the driest continent?
Model answer
Antarctica receives very little precipitation (mostly as snow), with interior regions receiving less than 50 mm water equivalent annually, making it technically a polar desert.
- 3
Why is Antarctica considered the windiest continent?
Model answer
Antarctica experiences extremely strong winds, particularly katabatic winds that can exceed 300 km/h, making it the windiest continent on Earth.
- 4
What is Antarctica's average elevation, and why is it so high?
Model answer
Approximately 2,500 metres, due to the thickness of its ice sheet covering the underlying bedrock.
- 5
What proportion of the world's fresh water is stored in Antarctica's ice sheets?
Model answer
Approximately 70% of the world's fresh water is locked in Antarctica's ice sheets.
- 6
What temperatures characterise Antarctica's interior during winter and coastal areas during summer?
Model answer
Interior winter temperatures reach below -60°C, while coastal areas average around 0°C in summer.
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