Question

The process of "Erosion" includes

• A. Deflation and Abrasion
• B. Disintegration and Decomposition
• C. Abrasion and disintegration
• D. Disintegration and Transportation

Hint:

A simple way to remember the difference:
Weathering makes the mess (breaks the rock down).
Erosion cleans it up (carries the pieces away).

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
The question asks for the best definition of the geological process of erosion from the given options.

Step 2: Detailed Explanation:
Let's define the key geological terms:
-

Weathering: This is the in-situ (in one place) breakdown of rocks, soil, and minerals.
It includes physical breakdown (

disintegration, e.g., by frost) and chemical breakdown
(

decomposition, e.g., by acid rain).
Option (B) describes weathering.
-

Erosion: This is the process where weathered material (like soil, rock fragments) is moved from one location to another.
It involves both the initial picking-up or breakdown of the material and its subsequent

transportation by agents like water, wind, ice, or gravity.
Therefore, erosion encompasses both the disintegration (or detachment) of material and its transportation.
-

Abrasion and

Deflation (Option A) are specific mechanisms of erosion, primarily by wind, but they don't define the entire process.
Abrasion is the scraping/wearing away, and deflation is the lifting of loose material.
Option (D) provides the most complete definition by including both the breakdown/detachment aspect (

Disintegration) and the crucial movement aspect (

Transportation).

Step 3: Final Answer:
The process of erosion includes disintegration and transportation.
This corresponds to option (D).