Intro

Question 1

The limit of the ‘north’ is defined by the ____

Answer 1

permafrost

Question 2

What are the 4 northern regions?

Answer 2

1. high arctic
2. low arctic
3. subarctic
4. boreal forest

Question 3

Where is the arctic? It depends on how you define it. What are the 3 main definitions?

Answer 3

1. geographic- 24hrs of daylight in the summer
2. thermal properties
3. floristic properties

Question 4

The arctic circle is at & above __ degrees latitude, and is defined by:

Answer 4

66.5 degrees

24hrs daylight in summer and 24hrs dark in winter

Question 5

ecology=

Answer 5

the study of relationships and interactions b/w plants and animals (inc humans_ and their enviro
- such that we can predict changes!

ie studying structure/ functions of ecosystems

Question 6

There are 8 ‘arctic nations’. List at least 4

Answer 6

• Canada
• US (Alaska)
• Greenland
• Iceland
• Norway
• Sweden
• Finland
• Russia

Question 7

What are the 3 delineations (describers) of the arctic?

Answer 7

1. 10 degree C isotherm for July
   - b/c 10C significant temp for plant growth/ life
2. Boreal forest treeline
   - roughly corresponds to the 10C July isotherm, but can be up to 200km south of the isotherm (varies w local climate & conditions)
3. Arctic Circle (66 degrees, 33min) ie 66.5 degrees N