The lighter component, the husk, gets blown away by the wind. The heavier wheat grains remain closer to the platform due to their weight, making them less susceptible to being carried away by the air.
Category: Class 6 Science
NCERT Solutions and Important Questions for class 6 Science for CBSE exams 2020-2021.
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No, the wheat grains and husk do not fall at the same place. The heavier wheat grains drop closer to the platform, while the lighter husk is carried further away by the wind.
When you rub roasted peanuts between your palms, the skin loosens and can be separated. Blowing on the mixture causes the lighter skins to fly away while the heavier peanuts remain in place.
The time farmers take to separate grains from husk varies based on methods used. Traditional winnowing can take several hours, while mechanical winnowers significantly reduce this time, completing the process in minutes for larger quantities.
Farmers will not handpick grains from piles of husk, as it would be too labor-intensive and inefficient. Instead, they use techniques like winnowing, which effectively separates grains from husk quickly and easily.