Case Study Questions Class 6 Science Chapter 16 Garbage In, Garbage Out
CBSE Class 6 Case Study Questions Science Garbage In, Garbage Out. Important Case Study Questions for Class 6 Board Exam Students. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions Garbage In, Garbage Out.
At Case Study Questions there will given a Paragraph. In where some Important Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks, 4 marks.
CBSE Case Study Questions Class 6 Science Garbage In, Garbage Out
Case study 1
Safari karamcharis collect the garbage intrucks and take it to a low lying openarea, called a landfill.There the part of the garbage that can be reused is separated out from theone that cannot be used as such. Thus,the garbage has both useful and non-useful components. The non-usefulcomponent is separated out. It is thenspread over the landfill and thencovered with a layer of soil. There aresome things in the garbagerot. They form manure which is usedfor the plants. The rotting andconversion of some materials intomanure is called ‘composting’.
In some cities and towns, municipalities provide separate dustbins for collecting two kinds of garbage. Usually one is coloured blue and the other green. The blue bin is for materials that can be used again — such as Plastics, metals and glass. These are the materials that do not rot in the garbage heaps. The Green bins are for collecting kitchen and other plant or animal wastes. This type of wastes rot completely when buried in the soil.Thus, it is necessary to separate wastes into two groups. You must have noticed garbage heaps of dried leaves on the roadside. Most of the time these are burnt. But burning these produces smoke and gases that are harmful for our health.
Que. 1) A low lying area where wastes materials are dumped is called ………………………………………………………………………………..……….
(a) Compost
(b) Roadside
(c) Landfill
(d) Dustbin
Que. 2) Burning of heaps of dried leaves on the roadside can affect our health.
(a) True
(b) False
Que. 3) Which of the following waste material rot completely in the garbage heap?
(a) Plastic
(b) Metal
(c) Animal waste
(d) All of the above
Que. 4) What is composting?
Que. 5) Why is it important to have separate dustbins for wastes materials?
Answer Key
Que. 1. c) Landfill
Que. 2. a) True
Que. 3. c) Animal waste
Que. 4) Answer: The process of rotting and converting of wastes materials into manure is called composting.
Que. 5) Answer: Waste materials like metals, glass and plastic do not rot over time in the garbage heap, so they need to be separated out from products like animals and plants wastes, kitchen wastes as they rot completely when buried in the soil.
Case study 2
A type of earthwormcalled redworm is used for composting.This method of preparing compostwith the help of redworms is calledvermicomposting.
We can try to make manure by Vermicomposting. For it, let us dig a pit on the ground and then spread 1 or 2 cm thick layer of sand over it. Now, spread some vegetable wastes including peels of fruits over this layer of sand. Dried animal dung could also be used as a spread over sand or wire mesh. Sprinkle some water to make this Layer wet. Keep this layer loose so that it has sufficient air and moisture. Now, put some redworms in the pit and cover it loosely with a gunny bag. Your redworms need food. You can give them vegetable and fruit wastes, coffee and tea remains and weeds from the fields or garden. It might be a good idea to bury this food about 2-3 cm inside the pit. Do not use wastes that may contain salt, pickles, oil,vinegar, and meat and milk preparations asfood for your redworms. If you put thesethings in the pit, disease-causing smallorganisms start growing in the pit. Oncein a few days, gently mix and move thetop layers of your pit.Redworms do not have teeth. Theyhave a structure called ‘gizzard’, whichhelps them in grinding their food.Powdered egg shells or sea shells couldbe mixed with the wastes. This wouldhelp redworms in grinding their food. Aredworm can eat food equal to its ownweight, in a day.Redworms do not survive in very hot or very cold surroundings. They also need moisture around them.
Observe the contents of the pit carefully after 3-4 weeks. If you see loose, soil like material in the pit, then your vermi-compost is ready.
Que.1) Redworm is a type of………………………………………………………………………………..……….
a) Insect
b) Disease causing organism
c) Earthworm
d) All of the above
Que.2) Which of the following type of wastes should not be use to feed redworms?
a) Pickles
b) Oil
c) Vinegar
d) All of the above
Que.3) Gizzard is a structure present in redworms that helps them to grind their food.
a) True
b) False
Que.4) What are the adequate conditions required by red worms to survive?
Que.5) What is Vermicomposting?
Answer Key
Que.1. c) Earthworm
Que.2.d) All of the above
Que.3.a) True
Que.4) Answer:Redworms require a moderate temperature, not very cold or hot. They need sufficient air and moisture in their surroundings.
Que.5) Answer:The method of preparing compost by using redworms is called vermicomposting.
Case study 3
It may be a little difficult to imagine our life without plastics. Things like Toys, shoes, bags, pens, combs, tooth brushes, buckets, bottles, and water pipes etc, all are made of plastic. The use of plastics in itself might not create so much of a problem. Problems arise when we use plastics excessively and are ignorant about ways of disposing their waste. We often use plastic bags to store cooked food items. Sometimes these bags may not be suitable for keeping eatables. Consuming food packed in such plastic bags could be harmful to our health.Many a time shopkeepers use plasticbags that have been used earlier forsome other purpose. Sometimes bagscollected by rag pickers are also usedafter washing them. Use of such recycledplastic bags to keep food items could beharmful for our health. For storingeatables we must insist on use of plasticbags that are approved for such a use.
All kind of plastics give out harmfulgases, upon heating or burning. Thesegases may cause many health problems,including cancer, in humans.You must have noticed that people often fill garbage in plastic bags and then throw it away. When stray animals look for food in these bags, they end up swallowing these. Sometimes, they die due to this.
Que.1)Which of the following is NOT a plastic product?
a) Toys
b) Pipes
c) Bucket
d) Clothes
Que.2) Storing of food items in ……………………………………………………………………………. Is harmful for our health.
a) Paper bags
b)Aluminium foil
c) Plastic bags
d) None of the above
Que.3) Excessive use of plastics and being careless about their disposal can lead to problems in the near future.
a) True
b) False
Que.4) Explain how the burning of plastic can affect our health?
Que.5) Explain how throwing of garbage in plastic bags is harmful for animals?
Answer Key
Que.1. d) Clothes
Que.2. c) Plastic bags
Que.3. a) True
Que.4) Answer: When plastics are burnt, they produces harmful gases that may lead to many health problems in humans, including cancer.
Que.5) Answer: People usually throw garbage in plastic bags. Stray animals in their search for foods in these bags end up swallowing these and sometimes many die due to this.
Case study 4
The plastic bags thrown awaycarelessly on roads and other places getinto drains and the sewer system. Asa result, drains get choked and the waterspills on the roads. During heavy rains,it might even create a flood like situation.To minimize the overuse of plastics and deal with garbage, we can follow these steps:
1.) We make a minimum use of plastic bags. We re-use the bags whenever it is possible to do so without any adverse affects.
2.) We insist shopkeepers use paperBags. We carry a cloth or a jute bag when we go out for shopping.
3.) We do not use plastic bags to store eatables.
4.) We do not throw plastic bags hereand there, after use.
5.) We never burn plastic bags and otherplastic items.
6.) We do not put garbage in plastic bags and throw it away.
7.) We use vermicomposting at home and deal with our kitchen waste usefully.
8.) We recycle paper.
9.) We use both sides of the paper to write. We use a slate for rough work. We use blank sheets of paper left in our notebooks for rough work.
10.) We make our family, friends and others to follow proper practices for disposing different kinds of wastes.
Que.1) Recycling of ………………………………………………………………………… Is healthy for the environment.
a) Plastic
b) Jute
c) Paper
d) All of the above
Que.2) Which of the following step should be taken to reduce the overuse of plastics?
a) Pack food items in plastic bags
b) Throw garbage in plastic bags
c) Using jute bags for shopping
d) All of the above
Que.3) It’s high time that we should minimize the use of plastic and try to deal with garbage eco- friendly.
a) True
b) False
Que.4) Mention ways to minimize the use of plastic.
Que.5) How can throwing of plastic bags on roads affect the drainage system?
Answer Key
Que.1. c) Paper
Que.2. c) Using jute bags for shopping
Que.3. a) True
Que.4) Answer:1.) Carrying cloth or jute bags for shopping.
2.) Recycling of paper.
Que.5) Answer: When plastic bags are thrown on roads or other places, possibilities are there that they may get into the drainage system,blocking them partly or completely. As a result, the system’s water spills on the roadsleading to a flood like situation.