Question

Which of the following factors can influence the process of weathering?
A. Rock type and structure
B. Slope
C. Climatic Conditions
D. Time
Choose the most appropriate answer from the options given below:

• A. A, C and D only
• B. A and C only
• C. A, B, C and D
• D. A and D only

Hint:

Think of weathering as "rock decay." Just like a wooden fence decays, the rate depends on the type of wood (rock type), whether it's on a hill (slope), the local weather (climate), and how long it's been outside (time).

Answer 1

The Correct Option is C

Step 1: Weathering Defined:
Weathering involves the breakdown of rocks at or near the Earth's surface, encompassing both physical and chemical changes. This process is affected by geological, topographical, climatic, and temporal elements.

Step 2: Factors Affecting Weathering:
- A. Rock Characteristics: Rock type significantly impacts weathering susceptibility. Mineral composition dictates resistance (e.g., quartz resists weathering better than calcite). Structural features such as cracks and joints increase surface area, accelerating weathering.
- B. Slope Angle: Slope steepness influences weathering processes. Steep slopes promote physical weathering via gravity-induced rockfalls. Slope also affects water infiltration versus runoff. Rapid removal of weathered material (regolith) on steep slopes exposes underlying rock.
- C. Climate: Climate is a primary control on weathering. Temperature and moisture determine the type and rate of weathering. Cold, moist climates favor physical weathering (e.g., frost wedging), while warm, humid climates enhance chemical weathering.
- D. Time Exposure: Weathering is gradual. Extended exposure of rock surfaces to environmental elements leads to increased weathering.

Step 3: Conclusion:
Rock type and structure, slope, climatic conditions, and time all significantly influence weathering. Therefore, option (C) is the correct answer.