Class 7 Exam > Class 7 Questions > What causes mushroom rocks to form?a)The acti...
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What causes mushroom rocks to form?
- a)The action of sea waves
- b)The wind erodes the lower section of the rock more than the upper part
- c)The movement of glaciers
- d)The deposition of sediments
Correct answer is option 'B'. Can you explain this answer?
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What causes mushroom rocks to form?a)The action of sea wavesb)The wind...
In deserts, wind erosion is more effective near the ground, causing the lower parts of rocks to erode faster than the upper parts. This differential erosion creates mushroom-shaped rocks.
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What causes mushroom rocks to form?a)The action of sea wavesb)The wind...
Wind Erosion:
Wind erosion plays a significant role in the formation of mushroom rocks. Here's how it happens:
- Uneven Erosion: Over time, the wind carries abrasive particles that erode the rock surface. Due to variations in hardness and resistance, the lower section of the rock erodes more quickly than the upper part.
- Formation of Stem: As the lower section of the rock erodes more rapidly, it creates a narrower base or stem-like structure that supports the larger, mushroom-shaped cap above.
- Mushroom Shape: Eventually, the continuous erosion of the lower part of the rock results in the formation of a mushroom-shaped rock, with a stem supporting a broader cap.
- Distinctive Features: Mushroom rocks are characterized by their unique shape, with a narrow stem and a wider cap resembling the top of a mushroom.
- Location: Mushroom rocks are commonly found in deserts, coastal areas, or other regions with strong winds that facilitate the erosion process.
- Natural Phenomenon: The formation of mushroom rocks is a natural geological process that showcases the intricate interplay between wind erosion and the physical properties of rocks.
In conclusion, the action of wind erosion, specifically the differential erosion of the lower section of the rock compared to the upper part, is the primary cause behind the formation of mushroom rocks.
Wind erosion plays a significant role in the formation of mushroom rocks. Here's how it happens:
- Uneven Erosion: Over time, the wind carries abrasive particles that erode the rock surface. Due to variations in hardness and resistance, the lower section of the rock erodes more quickly than the upper part.
- Formation of Stem: As the lower section of the rock erodes more rapidly, it creates a narrower base or stem-like structure that supports the larger, mushroom-shaped cap above.
- Mushroom Shape: Eventually, the continuous erosion of the lower part of the rock results in the formation of a mushroom-shaped rock, with a stem supporting a broader cap.
- Distinctive Features: Mushroom rocks are characterized by their unique shape, with a narrow stem and a wider cap resembling the top of a mushroom.
- Location: Mushroom rocks are commonly found in deserts, coastal areas, or other regions with strong winds that facilitate the erosion process.
- Natural Phenomenon: The formation of mushroom rocks is a natural geological process that showcases the intricate interplay between wind erosion and the physical properties of rocks.
In conclusion, the action of wind erosion, specifically the differential erosion of the lower section of the rock compared to the upper part, is the primary cause behind the formation of mushroom rocks.
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What causes mushroom rocks to form?a)The action of sea wavesb)The wind erodes the lower section of the rock more than the upper partc)The movement of glaciersd)The deposition of sedimentsCorrect answer is option 'B'. Can you explain this answer?
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