Question

Fjords are formed by the action of _______________.
A. Water
B. Glacier
C. Wind
D. Sea waves

Answer 1

Hint: One important feature of Fjords is that it contains coral reefs and rocky islands known as skerries. Most of the largest coral reefs are found at the lower part of fjords in Norway. They are home to several varieties of fish, sea anemones and planktons.

Complete Answer:
A fjord is a long, profound, narrow water body that stretches far inland. Fjords are frequently set in a U-shaped valley with steep cliffs of rock on either side. When an ice sheet or glacier withdraws, after shaping its typical U-shaped valley a fjord is formed, and the sea fills the subsequent valley floor. These structures form a narrow steep-sided channel, at times it is deeper than 1300 meters, associated with the sea. The moraine pushes down the valley and the glacier is left submerged at the fjord's opening, causing the water at the neck of the fjord to be shallower than the main body of the fjord.
Now let us examine the options
Option A - Fjords are a narrow body of water which are formed by glaciers or ice sheets. When these glaciers cut and form a U-shaped valley by abrasion of surrounding bedrock and ice segregation it results in the formation of Fjords. These valleys are then flooded by water and are known as fjords.
Option B - Through the process of ice segregation and abrasion of the surrounding bedrocks glaciers when cut forms a U-shaped valley which later on is flooded with ocean water.
Option C - Wind plays an important role in the formation of glaciers. Wind influences accumulation over glaciers and also the snow depth distribution. Winds also influence the surface currents of the fjords. Hence, the fjords are not created by wind.
Option D - Fjords are a narrow body of water which are connected to the sea and oceans.
Thus, the correct answer is option, ‘B. Glacier’.

Note: Fjords are mainly found in Canada, Greenland, the U.S. state of Alaska, Chile and Norway. Norway is famous for its stunning fjords. The famous fjord of Norway is the Sognefjord which is nearly 160 kilometres long.