Class 6 Exam > Class 6 Questions > Which process in nature involves extremely sl...
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Which process in nature involves extremely slow changes that can take millions of years to occur?
- a)Formation of clouds
- b)Evolution of stars
- c)Formation of coal from wood
- d)Melting of ice caps
Correct answer is option 'C'. Can you explain this answer?
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Which process in nature involves extremely slow changes that can take ...
The formation of coal from wood is a natural process that involves extremely slow changes taking millions of years to complete. This transformation occurs through the gradual compression and decomposition of plant material over extended periods, eventually resulting in the formation of coal, a process that exemplifies the concept of slow changes in nature.
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Which process in nature involves extremely slow changes that can take ...
Formation of Coal from Wood
The formation of coal from wood is a geological process that occurs over millions of years. This transformation involves several key stages that highlight the slow changes in nature.
Stages of Coal Formation
- Accumulation of Plant Material:
It begins with the accumulation of large amounts of plant debris, particularly from trees, in swampy areas.
- Burial and Compression:
Over time, sediments like mud and sand bury this organic material. The pressure from these layers compresses the plant material, leading to physical and chemical changes.
- Heat and Pressure:
As the layers continue to build, the temperature and pressure increase. This process can take millions of years and is essential for the conversion of plant material into coal.
- Coalification:
Through a series of chemical reactions, the organic material transforms into peat, then lignite, followed by bituminous coal, and finally anthracite, which is the highest grade of coal.
Time Scale
- The entire sequence from wood to coal is incredibly slow, often taking around 300 million years.
- This gradual process contrasts sharply with other natural occurrences like cloud formation or ice melting, which happen on much shorter timescales.
Significance
- Coal plays a crucial role as a fossil fuel, providing energy for electricity and heat.
- Understanding this process illustrates the importance of geological time and how natural resources develop over extensive periods.
In conclusion, the formation of coal from wood is a prime example of extremely slow changes in nature, making option 'C' the correct answer.
The formation of coal from wood is a geological process that occurs over millions of years. This transformation involves several key stages that highlight the slow changes in nature.
Stages of Coal Formation
- Accumulation of Plant Material:
It begins with the accumulation of large amounts of plant debris, particularly from trees, in swampy areas.
- Burial and Compression:
Over time, sediments like mud and sand bury this organic material. The pressure from these layers compresses the plant material, leading to physical and chemical changes.
- Heat and Pressure:
As the layers continue to build, the temperature and pressure increase. This process can take millions of years and is essential for the conversion of plant material into coal.
- Coalification:
Through a series of chemical reactions, the organic material transforms into peat, then lignite, followed by bituminous coal, and finally anthracite, which is the highest grade of coal.
Time Scale
- The entire sequence from wood to coal is incredibly slow, often taking around 300 million years.
- This gradual process contrasts sharply with other natural occurrences like cloud formation or ice melting, which happen on much shorter timescales.
Significance
- Coal plays a crucial role as a fossil fuel, providing energy for electricity and heat.
- Understanding this process illustrates the importance of geological time and how natural resources develop over extensive periods.
In conclusion, the formation of coal from wood is a prime example of extremely slow changes in nature, making option 'C' the correct answer.
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Which process in nature involves extremely slow changes that can take millions of years to occur?a)Formation of cloudsb)Evolution of starsc)Formation of coal from woodd)Melting of ice capsCorrect answer is option 'C'. Can you explain this answer? for Class 6 2025 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about Which process in nature involves extremely slow changes that can take millions of years to occur?a)Formation of cloudsb)Evolution of starsc)Formation of coal from woodd)Melting of ice capsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 6 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which process in nature involves extremely slow changes that can take millions of years to occur?a)Formation of cloudsb)Evolution of starsc)Formation of coal from woodd)Melting of ice capsCorrect answer is option 'C'. Can you explain this answer?.
Which process in nature involves extremely slow changes that can take millions of years to occur?a)Formation of cloudsb)Evolution of starsc)Formation of coal from woodd)Melting of ice capsCorrect answer is option 'C'. Can you explain this answer? for Class 6 2025 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about Which process in nature involves extremely slow changes that can take millions of years to occur?a)Formation of cloudsb)Evolution of starsc)Formation of coal from woodd)Melting of ice capsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 6 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which process in nature involves extremely slow changes that can take millions of years to occur?a)Formation of cloudsb)Evolution of starsc)Formation of coal from woodd)Melting of ice capsCorrect answer is option 'C'. Can you explain this answer?.
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