1.2.4 Cold Environments (Polar And Tundra) Characteristics Flashcards
Where are polar Environments found
- Inland areas far from the warming influence of the sea
Average monthly temperature of polar environments
Below freezing
How does precipitation fall in polar environments?
As snow
Are most polar regions partly of completely covered with icecaps
Yes
Winters in polar dessert
Permanently dark
Which cold environment is a cold desert?
Polar biome
Character of the ground in polar environments
- Soil is almost nonexistent
- The floor is mostly frozen, bare rock
- Permafrost is found here
Where are tundra environments found?
- Found south of the icecaps in the northern hemisphere
- occupy 1/5 of Earth’s land surface
What is the ground like in tundra environments?
- Lack permanent ice cover
- Permafrost is found here but the active layer melts fo 1 or 2 months a year
What is the soil like in tundra environments?
- Thin soils aren’t particularly fertile
- Waterlogged soil in the summer and frozen in the winter
- Soil depth and fertility increases the further you get from the poles
Difference in temperature range between tundra and polar environments?
- Tundra has a significant temperature range
- In comparison, polar environments temperature is always below freezing
Soilfluction
the gradual movement of wet soil or other materials down a slope
Which environment does soilfluction occur?
Tundra biome
Permafrost
Permafrost is a permanently frozen layer on or under Earth’s surface
Active layer
the seasonally thawed surface layer above permafrost