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Explain, with the aid of diagrams, the formation of any two landforms - Leaving Cert Geography - Question 2B - 2020
Question 2B
Explain, with the aid of diagrams, the formation of any two landforms. Or Describe and explain any two processes of mass movement.
Worked Solution & Example Answer:Explain, with the aid of diagrams, the formation of any two landforms - Leaving Cert Geography - Question 2B - 2020
Step 1
Explain, with the aid of diagrams, the formation of any two landforms.
Answer
Landform 1: The Formation of a Sand Dune
- Landform Named: Sand Dune
- Diagram:
- Description:
- Sand dunes are formed by the accumulation of sand particles deposited by the wind. They are commonly found in deserts and along coastlines.
- Relevant Process: The process of wind erosion and deposition plays a significant role in the formation of sand dunes. As wind blows, it picks up sand from the ground, which is then deposited when the wind velocity decreases, leading to the gradual buildup of the dune.
Landform 2: The Formation of a Glacier
- Landform Named: Glacier
- Diagram:
- Description:
- Glaciers are formed from the accumulation and compaction of snow over many years, eventually turning into ice. They can be found in polar and high mountain regions.
- Relevant Process: The process of snow accumulation in cold climates leads to compaction; over time, further pressure causes the snow to transform into dense ice. Glaciers move slowly due to gravity, shaping the landscape through erosion and deposition.
Step 2
Describe and explain any two processes of mass movement.
Answer
Process 1: Landslides
- Process Stated: Landslides
- Description:
- Landslides occur when there is a sudden and fast movement of rock and soil down a slope. They are typically triggered by heavy rainfall, earthquakes, or volcanic activity. The steepness of the slope and the saturation of the soil are critical factors in their occurrence.
Process 2: Soil Creep
- Process Stated: Soil Creep
- Description:
- Soil creep is a slow, gradual movement of soil down a slope due to gravity. Factors contributing to soil creep include moisture levels and freeze-thaw cycles that cause soil particles to shift. This process can cause long-term damage to structures and is often visible through tilted fences or trees.