1. Which of the following factor influencing soil formation?
2. The process of breaking down rocks and minerals into smaller particles is known as_
Weathering of rock refers to the process by which rocks are broken down and altered by various physical, chemical, and biological processes at or near the Earth's surface. It is a natural process that occurs over time due to exposure to environmental factors. Weathering plays a crucial role in the formation of soil and the shaping of landscapes.
Mechanical weathering involves the physical breakdown of rocks into smaller fragments without changing their chemical composition. Some common mechanical weathering processes include frost action, abrasion, and exfoliation.
Chemical weathering involves the alteration of rock composition through chemical reactions. It occurs when minerals in rocks react with water, gases, or other substances in the environment. Some examples of chemical weathering processes include hydrolysis, oxidation, and carbonation.
Both mechanical and chemical weathering processes work together to break down rocks into smaller particles, which eventually contribute to the formation of soil. The rate and intensity of weathering can vary depending on factors such as climate, rock type, vegetation cover, and time.
3. Which type of weathering involves the physical disintegration of rocks without changing their chemical composition?
Mechanical weathering is the physical breakdown of rocks into smaller fragments without altering their chemical composition. Key processes include frost wedging, abrasion, biological activity, exfoliation, thermal expansion, salt crystal growth, impact and pressure, and jointing/faulting. Factors influencing mechanical weathering include rock hardness, mineral composition, climate, vegetation, and exposure duration.
4. Which of the following factors plays a significant role in the development of distinct soil profiles?
5. The vertical arrangement of different soil horizons is referred to as:
6. Residual soil are those soil__
7. The size of loess particle varies from_
8. The soil which has maximum expansive and shrinkage properties_
9. The soil most form in dry continental region_
10. Admixture of clay, sand, gravel are cemented by calcium carbonate from ground water_
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