Midterm 2

Question 1

Talik

Answer 1

Thawed permafrost

Question 2

Continuous permafrost

Answer 2

Thick, formed in last glacial period

Question 3

Discontinuous permafrost

Answer 3

Pockets of unfrozen ground, thinner

Question 4

Conduction

Answer 4

Through solid body, material don’t move

Question 5

Convection

Answer 5

Thru fluid body, material moves and carries heat

Question 6

Permafrost landscape features

Answer 6

Ice wedge, patterned ground, themokarst lake

Question 7

Thawing permafrost effects

Answer 7

Chg in vegetation, landslides, erosion, more sediment, drunken forest, lakes gone

Question 8

How to measure carbon/methane emissions

Answer 8

Fly in a plane with lasers and co2 ch4 absorb beams so less will get back to plane,

Question 9

Sea ice features

Answer 9

7% of surface, high albedo, forms deepwater

Question 10

Sea ice formation+ brine channels

Answer 10

Frazil, small pancake, medium pancake, large pan, pack ice.

Salty water can’t be frozen so they just go into the water

Question 11

Features from sea ice movement

Answer 11

Compression ridge and open areas of water

Question 12

Lead

Answer 12

Linear break in sea ice bc of stretch

Question 13

Polynas

Answer 13

Round areas of open water bc of wind or melting