Class 8 science chapter 1 question4-8

4. Question
Name the process of beating out the grains from harvested crop.
Answer
The process of beating out the grains from the harvested crop plants is
called threshing.
5. Question
Name the machine used in recovering the grain from already cut crop.
Answer
A machine called combine is used for harvesting and threshing (Cutting
of standing crop and recovering grains).
6. Question
Name the machine which does the cutting of standing crops and
recovers the grain too.
Answer
A machine called combine is used for harvesting and threshing (Cutting
of standing crop and recovering grains).
7. Question
Name the process in which grains are separated from chaff and hay with
the help of wind.
Answer
The process in which grains are separated from chaff with the help of
wind is called winnowing.
8. Question
Name three food materials obtained from animals.
Answer
The food materials that we obtain from animals are milk, meat and eggs.

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