polar lands © karen devine 2010. where are the polar lands? polar lands are located inside the...
TRANSCRIPT
Polar LandsPolar Lands
© Karen Devine 2010
Where are the Polar Lands?Where are the Polar Lands?
Polar lands Polar lands are located are located inside the inside the Arctic and Arctic and Antarctic Antarctic Circles.Circles.
© Karen Devine 2010
What are the main features of Polar What are the main features of Polar Lands?Lands?
The main features of The main features of polar lands are:polar lands are:
a)a) Very cold.Very cold.b)b) Little or no Little or no
vegetation.vegetation.c)c) Very dry (< 450 mm Very dry (< 450 mm
of precipitation per of precipitation per year).year).
d)d) Low humidity.Low humidity.e)e) Difficult to establish Difficult to establish
settlements.settlements.
© Karen Devine 2010
What are the main features of Polar What are the main features of Polar Lands?Lands?
f) f) Desolate and a harsh environment.Desolate and a harsh environment.g) g) Extremes in sunlight (24 hrs a day Extremes in sunlight (24 hrs a day
sunlight at the summer solstice and sunlight at the summer solstice and 24 hrs a day darkness at the winter 24 hrs a day darkness at the winter solstice).solstice).
h) h) Landscape includes icecaps and Landscape includes icecaps and tundra.tundra.
i) i) The sun’s rays are often reflected The sun’s rays are often reflected back from the ice.back from the ice.
j) j) There is a high wind chill factor.There is a high wind chill factor.k) k) Permafrost exists.Permafrost exists.l) l) The sun’s rays are too oblique to The sun’s rays are too oblique to
provide solar energy.provide solar energy.
© Karen Devine 2010
Spatial Distribution of Polar LandsSpatial Distribution of Polar Lands
Polar lands Polar lands include areas include areas where the where the average average temperature in temperature in the warmest the warmest month is no more month is no more than 10° C. than 10° C.
© Karen Devine 2010
Spatial Distribution of Polar LandsSpatial Distribution of Polar Lands
Icecap lands have Icecap lands have a permanent a permanent cover of ice and cover of ice and snow.snow.
Most polar lands Most polar lands are located are located between between isotherms 0°C and isotherms 0°C and 10° C.10° C.
© Karen Devine 2010
Question Time?Question Time?
What What distinguishes distinguishes Antarctica Antarctica from the from the Arctic?Arctic?
© Karen Devine 2010
Value of the Arctic?Value of the Arctic?
Watch a film on Watch a film on the value of the value of Arctic resources Arctic resources to Canada.to Canada.
Play film here.Play film here.
© Karen Devine 2010