Define the following: a. Winnowing b. Threshing c. Condensation
Answers
Answer:
condensation means water changing to water vapour
Answer:
(a) winnowing :- Winnowing is the simple method of cleaning food materials from a mixture. Winnowing separate the grain from the husk because one particle is light and the other is heavy . ... The chaff from a heap at a little distance from the heap of grains . This is process is known as winnowing. Examples are paddy (rice) and wheat
(b) Threshing :- Threshing” is the operation of separating the grains from the plants. These operations may be carried out in the field or on the threshing floor, by hand or with the help of animals or machines. Whatever the system used, it is very important that threshing be done with care.
(c) Condensation :- Condensation is the process where water vapor becomes liquid. It is the reverse of evaporation, where liquid water becomes a vapor. Condensation happens one of two ways: Either the air is cooled to its dew point or it becomes so saturated with water vapor that it cannot hold any more water.