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Subjects

Geography

Weathering: physical, chemical, and biological

In Class 11 Geography, this topic from the chapter “Geomorphic Processes” explains weathering as the breakdown and alteration of rocks at or near Earth’s surface without transporting the material. Students learn how physical weathering acts through temperature changes, pressure release, and frost; how chemical weathering involves processes such as solution, carbonation, oxidation, hydration, and hydrolysis; and how plants, animals, and microorganisms drive biological weathering. The topic also connects climate, rock type, relief, and time with soil formation and landscape development.

Easy · Level 1 · 25 questions

Practice questions

01What is the main meaning of weathering?

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02What type of main change occurs in physical weathering?

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03Chemical weathering occurs due to which reason?

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04Biological weathering is mainly related to what?

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05Thermal expansion and contraction is an example of which type of weathering?

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06Which process occurs when water freezes and expands in rock cracks?

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07Rock breakage due to growth of salt crystals is an example of what?

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08Which gas generally plays a role in oxidation?

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09Rust-like colour in iron-bearing minerals is related to what?

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10In carbonation, water combines with which gas to form a weak acid?

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11Why is the effect of carbonation clearly seen on limestone?

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12What happens in the solution process?

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13What joins with minerals during hydration?

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14What is the role of water in hydrolysis?

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15What can tree roots do when they grow in rock cracks?

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16How do burrowing animals affect rocks and soil?

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17What effect can mosses and lichens have on rocks?

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18Which physical weathering is common in hot desert regions?

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19Why is frost weathering effective in cold mountainous areas?

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20Rainfall and moisture increase which type of weathering more?

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21In which climate is chemical weathering generally rapid?

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22In which climate is physical weathering generally more dominant?

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23How does weathering help in soil formation?

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24In weathering, what is the original rock material called?

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25Why does weathering increase when water enters joints and cracks?

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