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प्रश्न
Give Reasons:
Chemical weathering is predominant in hot and humid zones.
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उत्तर
- Heat speeds up chemical weathering.
- Minerals can react with oxygen in the atmosphere or water from rain – even occassional rain in arid zones – to change their chemical composition.
- Metallic silicate minerals such as iron containing olivine, oxidize to form hematite, a red coloured iron oxide that coats rocks.
- It is present in desert sands as laterite soil.
- With continuing heat and moisture, hematite hydrates to form a yellow coloured iron oxide, limonite.
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संबंधित प्रश्न
What do you understand by controlled grazing?
Discuss the role of water in the process of chemical weathering.
How do animals and plants assist in weathering?
Describe chemical weathering, mentioning the processes involved in it.
Name the gases involved in the process of chemical weathering.
Distinguish between :
Physical Weathering and Chemical Weathering.
Name the different processes of chemical weathering.
Give reasons for the following :
Presence of water aids chemical weathering.
Mixing of water with the atmospheric carbon-di-oxide is known as ______.
Statement: The Agents of chemical weathering are Oxygen, Carbon dioxide, and Hydrogen.
Reason: Chemical weathering is predominantly high in the hot and humid regions.
