Sea Level Change Landforms

Question 1

Emergence?

Answer 1

• land rising/sea level falling (relative fall)

Question 2

Submergence?

Answer 2

• land sinking/sea level rising (relative rise)

Question 3

Emergent Coastlines?

Answer 3

• around the coastline there is evidence of relatively higher sea-levels in the form of raised beaches
• these are deposits of sand and pebbles on gently sloping platforms backed by an old cliff line, which may contain caves, wave-cut platforms and even arches

Question 4

Submergence Coastlines?

Answer 4

• the rise of sea level allows the sea to submerge low-lying land masses
• this is particularly common in existing river valleys and glacial valleys

Question 5

What are rias?

Answer 5

• formed when river valleys are submerged by rising sea level
• they share the same long and cross profiles of a river

Question 6

Dalmatian Coastlines?

Answer 6

Form in the same way as Rias - but the rivers ran parallel to the coast - leaving islands as they were submerged

Question 7

Fjords?

Answer 7

• formed when rising sea levels submerge a glacial valley (glacial trough)
• straight and narrow with very steep sides (U-shaped)
• have a shallower part near the mouth where the glacier left the valley (and deposited material