Winnowing is a simple method used to separate mixtures, particularly in agriculture. It relies on the principle of differential mass and density of the components within the mixture. Here is an example of a mixture that can be separated by winnowing:
1. Mixture: A combination of grains (such as wheat or rice) and chaff (the husks or outer coverings of the grains).
Procedure for separation using winnowing:
Step 1: Prepare a large flat surface, preferably outdoors, where the wind can blow freely.
Step 2: Pour the mixture of grains and chaff onto the flat surface, ensuring an even distribution.
Step 3: Stand upwind and gently toss the mixture into the air. This will cause the lighter chaff to be carried away by the wind, while the heavier grains will fall back onto the surface.
Step 4: Continue tossing and allowing the wind to carry away the chaff. Repeat this process until most of the chaff is separated from the grains.
Step 5: Collect the separated grains, ensuring that minimal chaff remains with them.
By employing winnowing, the mixture of grains and chaff can be effectively separated. The lighter chaff, due to its lower mass and density compared to the grains, will be carried away by the wind, leaving behind the desired grains. This method is valuable in agricultural settings, where it helps remove unwanted materials and ensures a cleaner, higher-quality crop.
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Answer:
Winnowing is a simple method used to separate mixtures, particularly in agriculture. It relies on the principle of differential mass and density of the components within the mixture. Here is an example of a mixture that can be separated by winnowing:
1. Mixture: A combination of grains (such as wheat or rice) and chaff (the husks or outer coverings of the grains).
Procedure for separation using winnowing:
Step 1: Prepare a large flat surface, preferably outdoors, where the wind can blow freely.
Step 2: Pour the mixture of grains and chaff onto the flat surface, ensuring an even distribution.
Step 3: Stand upwind and gently toss the mixture into the air. This will cause the lighter chaff to be carried away by the wind, while the heavier grains will fall back onto the surface.
Step 4: Continue tossing and allowing the wind to carry away the chaff. Repeat this process until most of the chaff is separated from the grains.
Step 5: Collect the separated grains, ensuring that minimal chaff remains with them.
By employing winnowing, the mixture of grains and chaff can be effectively separated. The lighter chaff, due to its lower mass and density compared to the grains, will be carried away by the wind, leaving behind the desired grains. This method is valuable in agricultural settings, where it helps remove unwanted materials and ensures a cleaner, higher-quality crop.