erosion and deposition of ice

Question 1

glaciers (3)

Answer 1

• frozen rivers that move rlly slow
• made of water, rock n sediment
• scrapes surface of land and erodes/changes landscape

Question 2

types of ice erosion (3)

Answer 2

• plucking
• abrasion
• freeze-thaw

Question 3

plucking (1)

Answer 3

when rocks are removed from the backwall of stone because they got frozen with glacier melt water

Question 4

abrasion (1)

Answer 4

when rock frozen to bedrock (base) gets scraped by back of glacier

Question 5

freeze-thaw (1)

Answer 5

when rain or melt water gets into cracks of rock and expands cracks when water freezes and night

Question 6

cirques (3)

Answer 6

• found at start of glacier
• ampitheatre shape
• ice is plucked from back walls which forms the shape and falls into tarn

Question 7

tarn (1)

Answer 7

when ice melts to form a lake

Question 8

are~te (2)

Answer 8

• forms from two neighboring cirques

- glaciers erode sides and eventually it becomes steeper

Question 9

horn (1)

Answer 9

when 3 adjacent cirques erode and form a peak

Question 10

u shaped valley (1)

Answer 10

-when glaciers turns sharper v shaped valleys into u shaped

Question 11

hanging valley (1)

Answer 11

when tributaries of main glaciers erode at different rates and 1 tributary is higher than the other so the valley has a sudden drop in gradient

Question 12

moraines (2)

Answer 12

lines made of sand and stone

-fallen from cliffs during freeze thaw and also eroded bedrock

Question 13

eskers (1)

Answer 13

lines of deposited gravel and stone from rivers that flowed under glacier

Question 14

drumlins (1)

Answer 14

small hills made of stone and clay that form when glaciers melt