Coasts - Sea Level Change

Question 1

what is isostatic change?

Answer 1

the change in the height of the land relative to the sea level

Question 2

what is isostatic recovery?

Answer 2

melting ice previously on lands reduces its weight and causes the coastline to rise again

Question 3

what is eustatic change?

Answer 3

• changes in the actual sea level itself

Question 4

what can cause eustatic change?

Answer 4

• thermal expansion or contraction
• melting ice causes the volume of water in the oceans to increase, and also then the sea levels

Question 5

what are emergent landforms?

Answer 5

landforms that are created when the land has been raised

Question 6

give examples of emergent landforms

Answer 6

• raised beaches

Question 7

what are submergent landforms?

Answer 7

landforms that are created when sea levels rise, or the land falls

Question 8

give examples of submergent landforms

Answer 8

rias, fjords, dalmation coasts

Question 9

what is a ria?

Answer 9

a flooded river valley

Question 10

what is a fjord?

Answer 10

a flooded glacial valley

Question 11

what are dalmation coasts?

Answer 11

• river valleys parallel to the coast get flooded
• result in a series of long, rugged islands

Question 12

give an example of a dalmation coast

Answer 12

croatia

Question 13

how much are sea levels predicted to rise by in 2100?

Answer 13

0.3-1m

Question 14

what is the issues of rising sea levels on coastal cities?

Answer 14

• will result in the flooding of many of them