glaciation

Question 1

what is latitude and longitude

Answer 1

-distance from equator.
-distance from south to north.

Question 2

when was the last glacial period

Answer 2

between 20,000 and 10,000 years ago

Question 3

what parts of the UK were covered in the most recent ice age

Answer 3

large parts of the British isles were completely glaciated with some areas partially glaciated

Question 4

describe the process of glacial ice

Answer 4

1. snow falls
   2.compaction and compression takes place
2. 20-30m down it turns into firn
   4.firn turns into glacial ice

Question 5

describe the glacial distribution (types of glaciers)

Answer 5

alpine - found in every continent and found on mountains
ice sheet - domed flow every direction they have an ice shelf at the end of them (greenland and antartica)

Question 6

describe how a u - shape valley is formed

Answer 6

• before a a glacial period there is a v - shape valley
  -during a glacial period a glacier erodes the v - shape valley through and abrasion
• in an interglacial the glacier retreats leaving a u shape valley and a glaciated upland

Question 7

state all types of moraine

Answer 7

• ground moraine
• medial moraine
• lateral moraine
• terminal moraine

Question 8

what is freeze - thaw weathering

Answer 8

when water gets into cracks in rocks, freezes and expands 10% eventually breaking it from this process repeating. (in situ)

Question 9

describe plucking and abrasion

Answer 9

1. the ice freezes around and under rocks under the glacier and then plucks them out
2. the plucked rocks and stones scrape bits off the bottom of the glacier and carried along.

Question 10

how do striations occur

Answer 10

when a glacier erodes a landscape plucking and abrasion occurs and then these rocks scrape the bedrock wearing it away which leaves behind a smooth rock with striations in it from the abrasion

Question 11

what is DISPLAY mean

Answer 11

DIS - distribution
P - patterns
L - location
AY - anomaly