ESS
Grade-4
Easy
Question
Which of the following factor affects the rate of weathering?
- Water
- Ice
- Chemicals
- All of these
Hint:
Weathering is of three types physical, chemical and biological.
The correct answer is: All of these
The correct option is d) All of the above.
- Water is the main factor behind both physical and chemical weathering, but atmospheric oxygen and carbon dioxide and biological activity are also important.
- Precipitation and temperature can affect the weather. High temperatures and increased precipitation accelerate chemical weathering. Chemical weathering is the process by which minerals in rocks turn into clay, oxidize, or simply dissolve.
- Liquid water penetrates cracks and crevices in rocks. When the temperature drops enough, the water freezes. When water freezes, it expands. Ice works like a wedge. Slowly widen the crack and split the rock.
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