Concept 3 of 8Foundation
Watch on YouTubeVideoThreshing and winnowing
Threshing: beating harvested crop stalks to separate GRAIN from STALK. Done with a stick, or a machine, or cattle trampling.
Winnowing: separate lighter husk from heavier grain by throwing the mix into the wind. The wind blows husk aside; heavier grain falls straight down.
Works because husk is MUCH lighter than grain.
Example
A farmer tosses wheat-husk mixture with a fork into air. Grain falls in a heap; husk drifts away → two neat piles.
💡 Tip:Winnowing fails if husk and grain weigh similar. Then use sieving.
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5 questions to check what you just read.
0 / 5
- Q1.Threshing separates:
- Q2.Winnowing separates by:
- Q3.Winnowing needs:
- Q4.Winnowing works when:
- Q5.A farmer tosses wheat + husk with a fork. Heavier grain: