Garbage In Garbage Out | Science 6th | Chapter 16 | Questions and Answers

JANDKNCERT | Science 6^th |

Garbage In Garbage Out | Science 6th | Chapter 16 | Questions and Answers

 

Chapter 16: Garbage In Garbage Out

Dear Students, in Chapter 15, you learned about the Air Around Us, in which you learned about the composition of air, the air is a mixture of many gases, air occupies space, winnowing, exchange of gases in the atmosphere, condensation, and presence of air in water and soil. You also learned that air is essential for all living organisms.

In this chapter, you will learn about the Garbage In Garbage Out. The following points will help you to understand this chapter easily.

• Landfill is an area where the garbage collected from a city or town is dumped. The area is later converted into a park.

• Converting plant and animal waste including that from the kitchen, into manure, is called composting.

• The method of making compost from kitchen garbage using redworms is called vermicomposting.

• Paper can be recycled to get useful products.

• Plastics cannot be converted into less harmful substances by the process of composting.

• We need to generate less waste and find ways of dealing with the increasing amount of garbage in our surroundings.

 

Let us try to answer some questions taken from the NCERT Book of Science Class 6th. This Exercise is taken from the same book.

 

Exercises

Q1. Answer these questions:

a. Which kind of garbage is not converted into compost by the red worms?

 

Answer.

Garbage like polythene bags, plastic pieces, broken glass, aluminum wrappers, nails, broken toys, and all inorganic wastes are not converted into compost by the red worms.

 

b. Have you seen any other organism besides redworms, in your pit? If yes, try to find out their names. Draw pictures of these.

 

Answer.

Besides red worms there are earth worms in the pit.

 

Q2. Discuss:

a. Is garbage disposal the responsibility only of the government?

 

Answer.

Garbage disposal is not the responsibility of the government only but it is also the responsibility of people who throw heaps of garbage on the earth. If this garbage is not treated in time this will cause hazardous diseases. So to keep ourselves healthy we should also help the government in the disposal of the garbage.

 

b. Is it possible to reduce the problems relating to disposal of garbage?

 

Answer.

Yes, it is possible to reduce the problems relating to the disposal of garbage. Three practices will help us in the reduction of garbage disposal problems. These three practices are Reduction at source, Reuse of products, and Recycling of waste products.

 

Q3. Think and answer:

a. What do you do with the leftover food at home?

 

Answer.

We throw the leftover food out so that animals like dogs or birds will eat it.

 

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?

 

Answer.

We would prefer to eat on a banana platter because the banana platter is not harmful to our health. Moreover, it can be decomposed easily. On the other hand, plastic is made from non-biodegradable substances and is harmful to health.

 

Q4. Do these activities:

a. Collect pieces of different kinds of paper. Find out which of these can be recycled.

 

Answer.

Most household, school trash, garbage paper can be recycled.

 

b. With the help of a lens look at the pieces of paper you collected for the above question. Do you see any difference in the material of recycled paper and a new sheet of paper?

 

Answer.

There may be a difference in the design, size, or the colour of the paper.

 

Q5. Activity-based questions:

a. Collect different kinds of packaging material. What was the purpose for which each one was used? Discuss in groups.

 

Answer.

Polythene bags are used to carry household things. Food packets are used to store food. Biscuit packets are made of polythene. Most of the packaging materials are made of polythene used for packing eatables.

 

b. Give an example in which packaging could have been reduced?

 

Answer.

Packaging could have been reduced by using a big jute or cloth bag for many items instead of a separate polythene bag for individual items. For example, while shopping, carry one big bag for all items.

 

c. Write a story on how packaging increases the amount of garbage.

 

Answer.

Packaging often increases the amount of garbage. When we are on a trip to any hill station, we see there, heaps of garbage in dustbins because we carry so many eatables separately packed in polythene bags.

 

Q6. Do you think it is better to use compost instead of chemical fertilizers? Why?

Answer.

Yes, it is better to use compost instead of chemical fertilizers because compost is natural manure and is neither harmful for the soil nor the organisms living in it. Compost is pollution-free manure. It is cheap and can be made at the domestic level. On the other hand, chemical fertilizers can cause water pollution and have many harmful side effects.