Glaciers - Landforms

Question 1

corries

Answer 1

1. north facing hollows in mountain
2. snow compresses forming ice
3. ice moves downhill, abrasion = deeper, plucking = cuts away at back wall
4. deep, semi-circular hollow w/ steep back wall & small lip
5. ice melts = tarn

Question 2

arêtes

Answer 2

1. explain a corrie
2. two corries back to back

Question 3

pyramidal peak

Answer 3

1. explain a corrie
2. tre or more corries back to back

Question 4

glacial troughs

Answer 4

1. glacier fills v-shape valley
2. plucking and abrasion deepens and straightens valley
3. steep sides, u-shaped valley, wide & flat valley floor

Question 5

hanging valley

Answer 5

1. tributary glacier erodes, but not as much as main
2. when it melts, a little valley is left above the main valley
3. a waterfall forms in it

Question 6

lateral moraine

Answer 6

moraine on the sides of the glacier

Question 7

medial moraine

Answer 7

• moraine in the middle of a glacier
• firmed when two glaciers are combined

Question 8

drumlin

Answer 8

1. lower lying areas when glaciers have too much moriane
2. due to obstacles (like hard rock) the glacier deposits
3. when glacier is retreating, it trails over the drumlin

Question 9

erratics

Answer 9

material that has been deposited by a glacier