Landform Development Answer (i) or (ii) - Leaving Cert Geography - Question B - 2017

Formation of Two Landforms

1. Landform 1: Sand Dunes
   • Diagram: A labeled diagram of a sand dune should illustrate the wind direction, the windward and leeward side, and the movement of sand.
   • Formation Explanation:
     • Sand dunes are formed by the accumulation of sand particles transported by wind. The wind deposits sand on the leeward side after it passes the crest of the dune, leading to its characteristic shape. Over time, the dune migrates due to continual sand movement.
2. Landform 2: River Meanders
   • Diagram: A diagram depicting the curve of a river, highlighting the point bar and cut bank.
   • Formation Explanation:
     • As a river flows, it erodes the outer bank and deposits sediment on the inner bank during its meandering process. This lateral erosion and deposition shape the river’s channel over time, resulting in pronounced curves known as meanders.

Relevant Processes

• For sand dunes, processes such as wind erosion and transportation of sand are critical.
• For river meanders, the processes of erosion and sediment deposition are fundamental to their formation.