Cold Environments Flashcards
What is a cold environment?
Areas that experience temperatures of 0 degrees or below for long periods of time
Where are cold environments located?
The most Northern and Southern parts of the planet
What are the differences between Polar and Tundra environments?
Polar:
-Extreme northerly or southerly location
-No permanent human activity
-Surface of ground is permanently frozen
-Limited vegetation, very fragile ecosystem
-Average temp of -12 to -6
Tundra:
-Some human activity present
-more prevalent in Northerly latitudes
-Many more animals like Caribou, Arctic foxes, Snow geese and Polar Bears
How is an arctic fox adapted to a cold environment?
-Round compact bodies less SA to volume ratio
-deep thick fur
-This fur on paws, lets them wals on snow and eyes
-muzzle, ears, and legs are short- less exposed to the cold air
How is a Polar bear adapted to a cold environment?
-Skin is thick and Black for warmth
-2 eyelids
-Short tail
-Strong neck and leg muscles to swim
-Nostrils close when swimming
-Blubber layer for warmth
-Paws have large SA to balance on snow- also have fur on paws
How are Bearberry plants adapted to cold environments?
-Low growing 5-10cm, can survive strong winds
-Thick bark for extra stability
-Small leathery leaves with small SA to retain water
-Bright berries which birds eat and seeds distributed through their excrament
How is Arctic Moss adapted to its cold environment?
-Lots of leaves and no flowers for lots of photosynthesis
-very short and never have woody stems to protect from strong winds
-Tiny leaves
When was oil discovered at Prudhoe Bay?
1969
Where is Prudhoe Bay?
North coast of Alaska
How has the Trans-Alaskan pipeline been set up to prevent leaks?
It has a one way valve system
How is the TAP been set up to prevent heat from escaping the pipes?
The pipes are insulated
How have they prevented the TAP from melting the permafrost?
They have elevated the pipeline above ground
How have they prevented The TAP from being affected by Earthquakes?
The elevated pipeline is on ski shoes
How is elevating the pipes beneficial to animals?
Doesn’t prevent animal migration
Why does the TAP need to prepare for earthquakes?
It crosses a tectonic fault line
