Question

Choose the weathering process which is dominant in dry climate:
(i) Physical weathering
(ii) Chemical weathering
(iii) Biological weathering

Answer 1

Hint: The world's scenes are always changing. Even the most substantial of rocks are broken down into smaller fragments by the sun, rain, frost, and wind before being transported away. Weathering is the word for this process. Weathering is the biological, chemical, and physical breakdown of land surfaces caused by the activity of climate and weather elements, animals, and plants. It is the natural breakdown and deterioration of rocks.

Complete answer:
Option (i):
Physical weathering occurs when rocks are broken down into little fragments while maintaining their chemical composition. Spontaneous temperature changes, such as too much or too little heat or cold, are the main causes of physical weathering. Physical weathering is the most common type of weathering in dry and cold climates.
So, option (i) is correct.
Option (ii):
When chemicals are diluted and dissolved in water, they infiltrate and percolate down the rock surfaces, causing chemical weathering. Chemical weathering occurs in locations with high temperatures and plenty of water, such as humid tropical regions.
So, option (ii) is incorrect.
Option (iii):
Weathering generated by plants and animals is known as biological weathering. Acid-forming chemicals are released by plants and animals, which promote weathering and contribute to the breakdown of rocks and landforms.
So, option (iii) is incorrect.

So, the correct answer is “Option (i)”.

Note:
Chemical weathering, physical weathering, biological weathering, and mechanical weathering are the four types of weathering that occur. Weathering has no moving transport agent, whereas Erosion wears away the rock and upper layer soil particles, which are then transferred elsewhere by water, wind, and other factors. Physical weathering is a geological process in which rocks break apart without changing their chemical content. Some applied forces have an impact on physical weathering processes.