Isostatic change

Question 1

Isostatic change is a localised change and may be due to:
Post-glacial adjustment which is what

Answer 1

During a period of glaciation, extremely heavy icy sheets weigh land down

When the glacial period ends and the ice melts the land will rebound to a higher level, lowering the sea level in a process known as isostatic recovery or readjustment

Question 2

Isostatic change is a localised change and may be due to accretion which is what

Answer 2

Within the sediment cell, there are areas of net deposition causing land to build up

Question 3

Subsidence

Answer 3

Caused by the lowering of the water table or increased deposition weighing down the sediment

Sinking of the ground

Question 4

Tectonics

Answer 4

The folding of the sedimentary rock
Lava and ash from volcanoes increase the height of the land relative to the sea level

Question 5

The UK is still experiencing isostatic recovery from the end of the last ice age
Land in the north in Scotland is still…….

Answer 5

rebounding and rising by approximately 1.5mm a year

Question 6

Landsend in Cornwall is sinking by

Answer 6

1.1mm each year