1.5 - Raised Beaches

Question 1

Sea level Change

Answer 1

Isostatic - Local
Eustatic - Global

Question 2

Eustatic SLR

Answer 2

A global change in sea level resulting from an actual fall/rise in SL.

Question 3

Isostatic SLR

Answer 3

Local changes in sea level that rdsult in land rising or falling, relatively to sea level so either subsiding or uplift.

Question 4

Raised Beach

Answer 4

Beach above tide level, surface is covered by sand/pebbles and vegetated by plant succession

Question 5

Stages In SLR

Answer 5

1. It gets colder, more glaciers, a fall in eustatic SL.
2. Glaciers cause land to sink leading to isostatic SLR
3. Climate change restores sea level, eustatic SLR, producing submergent coastlines
4. Ice melts, isostatic readjustment, land rises, isotatic recovery, forming emergent coastline.

Question 6

New Zealand

Answer 6

Convergent plate boundary
Many steep clffs with complex beaches
Tectonic Uplift

Question 7

Fossil Cliffs

Answer 7

Steep slopes found at the back of raised beach, where there’s marine erosion above high tide level. It may contain, caves, wave cut notches, arches. Isostatic recovery allows deposition and erosion to occur.

Question 8

Emergent Coastlines

Answer 8

Shows sea levels used to previously be higher, land forms are deposits of sand and pebbles. Coastal features are higher than current sea level showing land has risen and sea level has fallen.

Question 9

Isostatic Rebound

Answer 9

Glaciers melt in the north, causing the North to rebound and an emergent coastline out of the sea. This results in a higher land formation changes in the North therefore causing a submergent coastline in the South.