Nature and Distribution of Cold Environments (AQA A-Level Geography): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Four main types of cold environments
Four main types of cold environments
Polar, alpine, periglacial (tundra), glacial
Permafrost definition
Permafrost definition
Ground below 0°C for at least 2 consecutive years
Ice-albedo feedback loop effect
Ice-albedo feedback loop effect
Melted ice exposes dark surfaces; absorb heat; more melting
Katabatic winds max speed
Katabatic winds max speed
Can exceed 200 km/hr
Annual precipitation in polar regions
Annual precipitation in polar regions
Below 150 mm per year
Tundra growing season length
Tundra growing season length
50 to 60 days
Ice & snow albedo (reflectivity)
Ice & snow albedo (reflectivity)
80-90% of incoming radiation reflected
Current ice coverage of Earth's land
Current ice coverage of Earth's land
About 10% (15 million km²)
Ice coverage at Last Glacial Maximum (18,000 BP)
Ice coverage at Last Glacial Maximum (18,000 BP)
About one-third of Earth's surface
Meaning of 'tundra' in Sami language
Meaning of 'tundra' in Sami language
Treeless plain