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Summary food, plastics, recycled plastics

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some of this information is from google they include the diagrams and pictures other than that the rest of the information is from the tetx book the next series of notes for grade 9 technology will be electrical and electronic systems. i hope this helps.

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  • Chapter 8
  • November 13, 2021
  • 4
  • 2021/2022
  • Summary

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Food processing
 Food processing is the transformation of agricultural products into food, or of one form of
food into other forms. Food processing includes many forms of processing foods, from
grinding grain to make raw flour to home cooking to complex industrial methods used to
make convenience foods.


Structures for storing grain
 Improvements in storage methods have been observed over time and people used the right
methods for their situation or need, for example storing grain in sacks.
 Grains produced by farmers who farm as a business and on a large scale are stored in ‘silos’.
These are huge cement or metal structures that hold grain from many farms in one place
until it can be used or exported.
 The silos keep the grain cool and free from moisture, insects and rodents


A good storage container should:
 Keep grain cool and dry.
 Protect grain from insects.
 Protect grain from rats and mice.


The process of storing grain




1. Grain needs to be harvested. Small-scale or subsistence farmers do this by hand.
Harvesting on a much bigger, industrial scale with a combine harvester and a tractor.
2. The seed, which is the edible part of the grain, needs to be loosened from the plants
casing that protects the seed. The casing is edible and is called ‘chaff’ this process is
called threshing.

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