Chapter - 16
Garbage in, Garbage out
NCERT MP Board Class 6 Science Chapter 16 Garbage in, Garbage out
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NCERT MP Board Class 6 Science Chapter 16 Garbage in, Garbage out
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NCERT MP Board Class 6 Science Chapter 16 Garbage in, Garbage out
Solutions
Q.1. (a) Which kind of garbage is not converted into compost by the red worms?
(b) Have you seen any other organism beside red worms, in your pit? If yes, try to find out their names. Draw pictures of these.
Ans. (a) Garbage such as pieces of polythene bags, cloths, nails, old shoes, broken glass, broken toys and aluminium wrappers etc, are not converted into compost by the red worms.
(b) Yes, there are some other organisms in a compost pit such as fungi and bacteria which decompose the biodegradable wastes.
Q.2. Discuss:
(a) Is garbage disposal the responsibility only of the government?
(b) Is it possible to reduce the problems relating to disposal of garbage?
Ans. (a) No, it is also our responsibility. Because fresh air, water and locality helps us to make healthy. So, every citizen should be careful for waste disposal. We should not throw the wastes carelessly. We should collect all the garbage carefully in dustbins and save our environment from getting polluted.
(b) Yes, it is possible to reduce the problems relating to disposal of garbage by using recyclable materials.
Q.3. (a) What do you do with the left over food at home?
(b) If you and your friends are given the choice of eating in a plastic plate or a banana leaf platter at a party, which one would you prefer and why?
Ans. (a) Preserve properly the left over food and reuse. Convert it to some other food preparation and consume.
(b) In a party, I and my friends choose to eat in a banana leaf platter due to the following reasons:
(i) it is easily disposal.
(ii) it can be recycled.
(iii) it is more environment friendly.
Q.4. (a) Collect pieces of different kinds of paper. Find out which of these can can be recycled.
(b) With the help of a lens look at the pieces of paper you collected for the above questions. Do you see any difference in the material of recycled paper and new sheet of paper?
Ans. (a) We collected the pieces of old newspaper, used envelopes, notebooks, magazines, any other paper like shiny, plastic coated and shiny papers, all other papers can be recycled.
(b) When we see the recycled paper with the help lense, we find that there is a difference in quality of paper. The recycled paper is more thick and more rough as compared to new sheet of paper.
Q.5. (a) Collect different kinds of packaging material. What was the purpose for which each one was used? Discuss in groups.
(b) Give an example in which packaging could have been reduced?
(c) Write a story on how packaging increase the amount of garbage.
Ans. (a) Paper. : light food items
(b) Wooden boxes. : delicate items
(c) Card board. : crockery
(d) Glass covers : show pieces
(e) Plastic covers. : dresses and clothes.
(b) The shopkeepers should buy large amount of goods like sugar, dal, nuts, etc. By doing so, they can reduce the waste and packaging materials. They should buy goods in bulk and bigger quantities in a single package. This type of shopping will reduce the wastages.
(c) Packing increase the amount of garbage. Every goods or things are sold in small packets of plastic materials which are thrown out after use. These packaging materials also increase garbage. Now -a-days every goods and things such as soap, detergents, ghee, refined oil and many more eatable goods are generally sold in small packets. This also increases the garbage up to a large extent. In this way we can say that packaging materials increase the amount of garbage.
Q.6. Do you think it is better to use compost instead of chemical fertilizers? Why?
Ans. We think that compost is better to use instead of chemical fertilizers. Compost fertilizers are those in which plants and animals extracts etc. are used.
These fertilizers usually contain all nutrients in varying proportions.
These fertilizers are not made in factories. They are prepared by the farmers themselves using indigenous methods. They contain a large measure of organic matter. No special precautions are required while using them. In this category includes gobar khad, compost or the mixture made out of organic waste and human extract, green manure and oil cake etc.
Chemical fertilizers are manufactured artificially in factories with the use of chemicals. These contain large amount of plant nutrients. These contains only one or two or three nutritional elements. For examples Urea, Ammonium Sulphate, Sulphate phosphate, Potassium Sulphate, Sodium Nitrate, calcium Sulphate etc.