Question

Fjord (Fjord) coast is formed by _______

• A. Partial submergence of glacial trough
• B. Partial emergence of glacial trough
• C. Submergence of river valley
• D. Partial emergence of river valley

Hint:

Remember the coastal landforms: \[ \boxed{ \begin{aligned} \text{Fjord Coast} &\rightarrow \text{Submerged Glacial Valley}, \text{Ria Coast} &\rightarrow \text{Submerged River Valley}, \text{Dalmatian Coast} &\rightarrow \text{Parallel Ridges and Valleys}. \end{aligned} } \] Mnemonic: “Fjord = Flooded Glacier, Ria = Flooded River.”

Answer 1

The Correct Option is A

Concept: A fjord coast develops when a deep U-shaped glacial valley (glacial trough) is partially submerged by rising sea level after glaciation. Fjords are characterized by steep cliffs and deep, narrow inlets.

Step 1: Identify the origin of fjords. Fjords are formed by \[ \boxed{\text{Partial Submergence of Glacial Troughs}} \]

Step 2: Eliminate the incorrect options. \[ \begin{aligned} A. &\ \text{Partial submergence of glacial trough} \rightarrow \text{Correct.}\checkmark B. &\ \text{Partial emergence of glacial trough} \rightarrow \text{Incorrect.} C. &\ \text{Submergence of river valley} \rightarrow \text{Forms a ria coast.} D. &\ \text{Partial emergence of river valley} \rightarrow \text{Incorrect.} \end{aligned} \] Hence, \[ \boxed{\text{(A)}} \]