CBSE Class 6 Science Garbage In Garbage Out Worksheet

ACTIVITY- 1 : To observe and list the waste originated from your school and house for a week and record your observations.

Question. Vegetable peels are ______ waste. (Biodegradable/Non-biodegradable)
Answer: Biodegradable.

Question. Glass is a ______ waste. (Biodegradable/Non-biodegradable)
Answer: Non-Biodegradable.

Question. Plant leaves are ______ waste. (Biodegradable/Non-biodegradable)
Answer: Biodegradable.

ACTIVITY- 2 : To make compost pit in your school.

Question. Compost is rich in nutrients. (True/False)
Answer: True.

Question. We can use non-biodegradable waste in composting. (True/False)
Answer: False.

ACTIVITY- 3 : To prepare vermin-compost pit in your school.

Question. Kitchen waste (biodegradable waste) is used in vermin-composting. (True/False)
Answer: True.

Question. Vermi-composting is done by ____________.
Answer: Red worms.

ACTIVITY- 4 : To make your own recycled paper.

Question. The process of changing the waste and non-useable materials into useful material is called recycling. (True/False)
Answer: True.

Question. We can also recycle glass and metals to useful product. (True/False)
Answer: True.

EXERCISE

Fill In The Blanks:

Question. Composting done by earthworms is called _______.
Answer: Vermi-composting

Question. _____ dustbin is used for collecting non-biodegradable waste.
Answer: Blue

Question. Solid waste is commonly called ______.
Answer: Garbage

Question. Plastic is a _______ material.
Answer: Non-biodegradable

True Or False:

Question. A large, low lying area used to dispose off garbage is known as a dump.
Answer: True

Question. Landfill site is ideal for making parks and playgrounds.
Answer: True

Question. Green dustbin is used for collecting non-biodegradable waste.
Answer: False

Question. Biomedical wastes are hazardous and infectious.
Answer: True

Match The Column ‘A’ With Column ‘B’.
Question.     A                   B
1. Biomedical waste    a. Fly ash
2. Industrial waste     b. Medicines and syringes
3. Domestic waste     c. Paddy husk
4. Agricultural waste  d. Vegetable peels
Answer: 1-b , 2-a , 3-d , 4-c 

Choose The Correct Answer.

Question. _____ is a non-biodegradable waste.
(a) Plastic 
(b) Paper
(c) Vegetable matter
(d) Animal dung

Answer: A

Question. We can recycle __________
(a) Glass
(b) Metals
(c) Plastic
(d) All 

Answer: D

Question. Hospital waste is generally:
(a) Recycled
(b) Incinerated 
(c) Dumped in landfill
(d) Composted

Answer: B

Question. The earthworms used for composting are called:
(a) Redworms 
(b) Blueworms
(c) Greenworms
(d) Whiteworms

Answer: A

Very Short Answer Type Questions:

Question. What is meant by recycling?
Answer: Recycling is the conversion of waste material in usable form.

Question. What is meant by dump?
Answer: A large, low lying area used to dispose off garbage is known as a dump.

Question. What type of garbage is collected in blue dustbin and green dustbin?
Answer: Blue dustbin :- Non-biodegradable,
Green dustbin :- Biodegradable.

Short Answer Type Questions:

Question. What is vermin-composting? How is it done?
Answer: The method of preparing compost with the help of earthworms is called vermi-composting. The redworms eat the bio-degradable waste material along with soil and convert it into compost. This is done in a pit.

Question. Distinguish between biodegradable and non-biodegradable waste.
Answer: 

Long Answer Type Questions:

Question. List various methods of garbage disposal. Explain any one.
Answer: There are three important methods of disposal of garbage – Composting, Landfill and Incineration.
Incineration- The process of burning of waste in specially designed furnaces is called incineration. Hospital waste is generally disposed off in this way. This method has some disadvantages too. This process produces harmful gases which pollute our environment.

Question. Explain the 4R’s.
Answer: (1) Reuse- Reuse means to use again. Instead of throwing away an item we can use the item in various efficient ways. We can use empty jars and bottles as containers like pen stand, flower pot and storing things. We can reuse things after repair.
(2) Reduce- We should reduce the use of waste producing items.
(3) Recycle- Recycling is the conversion of waste material in usable form. We can recycle old newspaper into cardboard.
(4) Refuse- We should refuse to take plastic and polythene bags while shopping. We can use cloth-bag instead of polythene bag.

Question. Explain how plastic is a boon?
Answer: Plastic containers are lightweight, flexible, low cost and water resistant. So, plastic containers have replaced the glass and metallic containers. The plastic bags are reusable and can be recycled. Plastic is used for making lightweight furniture, toys, lab equipments, syringes, bottles, boxes etc. Hence we can say that plastic is a boon.

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1.We should not use the bags made of -
(A) Jute.
(B) Cloth.
(C) Paper.
(D) Plastic

2.Which of the following is true about composting?
(A) Composting increases the fertility of soil.
(B) Composting increases the water absorption capacity of soil.
(C) Both (a) and (b).
(D) None of these

3.Which of the following cannot be decomposed?
(A) Paper bags.
(B) Polythene bags.
(C) Both (a) and (b).
(D) None of these

4.Which one of the following wastes is harmful to us?
(A) Paper waste.
(B) Decaying remains of plants.
(C) Food waste.
(D) Plastic waste

5._____ are called farmer's friends.
(A) Sparrows.
(B) Oxes.
(C) Earthworms.
(D) Cows

6.The type of food redworms need is -
(A) Vegetable and fruit waste.
(B) Coffee and tea remains.
(C) Both 1 and 2.
(D) None of these

7.Plant, animal or kitchen waste is collected in-
(A) Green colour dustbin.
(B) Blue colour dustbin.
(C) Yellow colour dustbin.
(D) None of these

8.The process of getting manure from biodegradable wastes by adding earthworms to the compost is called -
(A) Vermiculture.
(B) Horticulture.
(C) Sericulture.
(D) Agriculture

9.Papier mache is a paste of-
(A) Flour and water.
(B) Clay and water.
(C) Clay, paper and some rice husk.
(D) None of these

10.The structure which helps red worm in grinding of food is -
(A) Teeth.
(B) Gizzard.
(C) Setae.
(D) None of these

11.Red-worm is a type of -
(A) Snake.
(B) Leech.
(C) Earthworm.
(D) None of these

12.Vermi composting is done by the worms named as -
(A) Red worms.
(B) Tape-worms.
(C) Round worms.
(D) None of these

13.The rotting and conversion of some materials into manure is known as:
(A) Incineration.
(B) Papier mache.
(C) Composting.
(D) None of these

14.The dustbin used for collecting reusable garbage is -
(A) Black colour dustbin.
(B) Blue colour dustbin.
(C) Red colour dustbin.
(D) Green colour dustbin

15.How do the redworms grind the food?

16.The garbage collected from a city or town is dumped into -
(A) Drains.
(B) A deep hole.
(C) Landfill.
(D) None of these

17.What should you do with the left over food at home?

18.Is all garbage harmful to us?

19.What is papier- mache?

20.How much food can red worms eat in a day?
(A) Equal to its weight.
(B) Half of its weight.
(C) Twice its weight.
(D) They do not eat anything

21.Redworms need moderate temperature and__________ for survival.
(A) Sunlight
(B) Moisture
(C) Oxygen
(D) None of these

22.Converting plant and animal waste including that from kitchen, into manure is called _______.
(A) Vermicomposting
(B) Landfill
(C) Composting
(D) Recycling

23.Where do Safai Karamcharis take the garbage which they collect in their trucks?
(A) Land pits
(B) Garbage bins
(C) Landfills
(D) Dustbins

24.Blue bin is used for collecting materials that:
(A) Rot easily.
(B) Can be used again.
(C) Do not rot completely.
(D) Are poison

25.Which is not true about the use of plastic?
(A)We should not use plastic bags to store eatables.
(B) We should not put garbage in plastic bags and throw it away.
(C) We should burn plastic bags and other plastic materials.
(D) We should make minimum use of plastic bags

26.The wastes which can be broken down to simple materials by the action of microorganisms are known as -
(A) Bio-degradable wastes. (B) Non-biodegradable wastes.
(C) Industrial wastes.
(D) None of these

27.The rotting and conversion of some materials into manure is called ________.
(A) Manuring
(B) Composing
(C) Composting
(D) Decaying

28.Which of the following substances rot easily?
(A) Vegetable waste
(B) Plastic
(C) Glass
(D) Polythene

29.___________ are called farmers friend.
(A) Rat
(B) Earthworm
(C) Leech
(D) Grasshopper

30.Name the structure used by the redworm for grinding the food.
(A) Gizzard
(B) Teeth
(C) Tongue
(D) Tusk

31.Papier-mache is the paste made of _________ and paper.
(A) Clay
(B) Sand
(C) Cream
(D) None of these

32.When plastics are burnt, they give out harmful gases and cause dangerous diseases to humans like _________.
(A) Asthma
(B) Cancer
(C) Arthritis
(D) None of these

33.Which of the following is a false statement?
(A) A low lying open area in which garbage is thrown is called landfill.
(B) Wastes are the useless and unwanted materials discarded by humans.
(C) Vermicomposting is a method of preparing compost with the help of red worms.
(D) The process of burning wastes in a large furnace is called vermiculture

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

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

36.Is it possible to reduce the problems related to disposal of the garbage?

37.What food do the red worms eat?

38.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?

39.What is landfill?

40.Define vermin composting.

41.Why should we not burn the dry leaves, husk or parts of crop plants after harvesting?

42.What is called composting? What materials can be converted in to compost?

43.Why should we not use waste that may contain salt, pickles, oil etc, as food for red worm?

44.What should be used to help the red worms grind their food?

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45.Do you think it is better to use compost instead of chemical fertilizer? Why?

46.What is vermin composting? Explain the process.

47.What are the other precautions that should be taken while preparing the vermin compost pit?

48.How to prepare recycled paper?

49.How are plastic a curse?

50.How can we minimize over use of plastics?