3.7 Sea Level Change Flashcards
1
Q
Thermal expansion
A
Expansion of sea water as it increases in temperature.
2
Q
Eustatic change
A
When the sea level itself rises or falls
3
Q
Isostatic change
A
When the land rises or falls, relative to the sea
4
Q
Isostatic subsidence
A
During glacial periods, the weight of the ice sheets makes the land sink
5
Q
Isostatic recovery
A
As ice melts at the end of a glacial period, the reduced weight of the ice causes the land to readjust and rise
6
Q
Tectonic activity effects on sea levels
A
- Uplift of mountain ranges and coastal land at convergent plate boundaries.
- local tilting of land
7
Q
Rias (sheltered winding inlets with irregular shorelines)
A
Form in valleys when flooded.
8
Q
Fjords
A
Formed when glacial troughs are flooded by a rise in sea level. Deeper inland than the coast
