3.1.4.2 The Nature And Distribution Of Cold Environments Flashcards
4 cold environments
Periglacial (tundra)
Glacial
Polar
Alpine
Where are tundra areas only found
On the edges of land masses in the northern hemisphere
2 e.gs of areas with tundra environments
Greenland
Canada
Siberia
What’s climate like in periglacial enviornments
Generally cold
Precipitation varies
Brief, mild summers and long,cold winters
What’s soil like in periglacial environment
Thin, acidic, not fertile
What are the 2 layers of soil in tundra
Permafrost layer topped with layer of soil that melts in summer
What’s permafrost
Soil and rocks that have been permanently frozen below ground for a period greater than a year
What type of layer is formed during the brief summer months when lying snow will melt and the upper part of the permafrost
Saturated and mobile active layer
What lakes are common in poorly drained tundras
Thaw lakes
What are unfrozen zones underground called
Taliks
What do plants grow like in periglacial
Slowly and not very tall
What’s most common type of plant in tundra
Grass
What root systems do plants have in tundra
Why
Shallow root systems
Due to permafrost
2 adaptations plant have in tundra
Grow close together and low to retain heat
Grow under a layer of snow and carry out photosynthesis
E.g on a plant and animal in tundra
Cotton grass
Red fox
2 adaptations cotton grass has in tundra
Low-lying
Seeds that scatter in wind
Darker leaves - more sun energy
Narrow leaves - reduce transpiration
2 adaptations red fox has in tundra
Multi-layer fur coat
Broad and hairy feet/hooves (snow shoes)
Stocky body
What are glacial environments
Areas of land permanently covered by ice (ice sheets or glaciers)
What are ice sheets
Domes of ice covering huge areas of land only now found in Greenland and Antarctica