Garbage In, Garbage Out: Class 6 Science Q&A · Page 2
42 free answers on Garbage In, Garbage Out (Science) for Class 6 students, across CBSE, ICSE and State boards.
Question & Answer
Questions
- ScienceClass 6CBSE
A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filing clinging to the (a) North Pole is almost equal to the South Pole. (b) North pole is much more than the South Pole. (c) North pole is much less than the South Pole. Magnet will be same all along its length.
Solution: : North Pole is almost equal to the South Magnetic strengths of North Pole and South Pole of a magnet are same.
- ScienceClass 6CBSE
North pole of a magnet can be identified by (a) Another magnet having its poles marked as North pole and South pole. (b) Another magnet no matter whether the poles are marked or not. (c) Using an iron bar. Using iron filings.
: Another magnet having its poles marked as north pole and south
- ScienceClass 6CBSE
Answer the following questions in one or two words or sentences. 1. Why should we prefer to use paper bags rather than polythene bags? 2. Who, out of the following should properly dispose of the garbage – father, mother, elder brother, younger sister? 3. Which one out of beetles, roundworm and earthworm are used for vermicomposting and why?
Solution: We should prefer to use paper bags rather than polythene bags because paper bags can be recycled and biodegraded but polythene bags being non-biodegradable they are harmful for humans, animals, plants and for the environment. Every member of the family should dispose the garbage It should be a concern of every citizen, be it a mother, father, elder brother or younger sister. Earthworms convert waste from plan
- ScienceClass 6CBSE
What happens when? 1. cooking medium is made to flow down a drain 2. insecticides, motor oil, paints are poured down the drain Tea leaves, cotton swabs and old soft toys are thrown into the drain.
Solution: When cooking medium is made to flow down a drain, it may choke the pipes causing drainage And if the cooking medium reaches to the soil, it will clog the pores of the soil which decrease soil fertility and pollute soil. When insecticides, motor oil and paints are poured down the drain, they may choke the pipes causing drainage problem. And if the discharge reaches the water bodies, it pollutes the wate
- ScienceClass 6CBSE
Why should we not burn plastic items?
olution: We should not burn plastic items because: On burning plastic, hazardous gases and fumes are emitted which are dangerous to human health and animals and also to the environment. Plastic is a non-biodegradable substance, so it cannot be easily Animals may consume the burnt pieces of plastic which may lead to their death by choking them. Burning plastic is not environment friendly it causes soil polluti
- ScienceClass 6CBSE
Recently, a ban on plastic bags has been imposed in many places? Is the ban justified? Give reasons in three sentences.
Solution: Yes, a ban on plastic bags is justified because: Plastic being non- biodegradable, it produces harmful gases on heating or These gases may pollute the environment and causes many diseases for humans. Wastes are thrown using plastic bags onto roads or into rivers when the animals eat the food along with the plastic bags it results in their death due to choking. Sewage system gets choked due to the blockage of waste in the Du
- ScienceClass 6CBSE
Beautiful hand crafted articles like boxes and toys are made of paper pulp in our country. Can you explain how paper pulp which is made from paper can be used to make hard boxes and other articles?
Beautiful hand crafted articles like boxes and toys are made of paper pulp in our country. Here are a few steps how it can be made: The paper pulp obtained from paper is mixed with glue and saw-dust. Using glue and saw-dust we can make the paper hard. So, for making hard boxes, toys, etc. few coats of this hard pulp are applied over the framework. It is then allowed to dry up. Once the pulp is dried up, hard boxes and toys can further be processed. Hence the box is ready.
- ScienceClass 6CBSE
Write 3 sentences on what comes to your mind when you chance to see the following. (a) A rag picker. (b) A cow eating a polythene bag. Foul odour emanating from garbage at the entrance of your house.
olution: A rag picker When we come across a rag picker, he represents poor people or under poverty He sorts out the biodegradable waste from non- biodegradable He exposes himself to the harmful substances generated by the solid waste which causes various diseases. A cow eating a polythene bag A cow eating a polythene bag is unsafe, it shows irresponsible behavior of citizens by thr
- ScienceClass 6CBSE
1. Given below are steps in vermicomposting and each step has been given an alphabet. Rearrange the steps in the correct sequence and write the alphabets on the chart provided. One step is done for you. F Dig a pit in a suitable place, in your garden. C Spread sand on the floor of the pit. E Add vegetable peels and fruits waste in the pit. A Sprinkle water to keep it moist D Place red worms in the pit B Cover with a gunny bag or grass Step 1 – F 2 – 3 – 4 – 5 – 6 –
Solution: Step 1 – F Step 2 – C Step 3 – E Step 4 – A Step 5 – D Step 6 – B
- ScienceClass 6CBSE
Put a tick (✓) against the garbage items given in Table 16.1 which could be converted into manure. Put a cross (X) against the others. Garbage Items Make manure or not (i) Egg shells (ii) Straw (iii) Dry flowers (iv) Pebbles (v) Broken pieces of glass (vi) Nails and screws (vii) Plastic bangles (viii) Left over food (ix) Steel broken vessel (x) Dead animals
Solution: Garbage Items Make manure or not (i) Egg shells ✓ (ii) Straw ✓ (iii) </td
- ScienceClass 6CBSE
1. Beera, a farmer would clear his field every day, and burn dry leaves fallen on the ground. After some time he found that those living in huts near his field were suffering from cough and breathing problems. (i) Can you explain why? Also suggest an environment friendly way to dispose the dry leaves.
Solution: Burning of dry leaves releases harmful fumes and gases which causes cough, breathing problems etc. People living in huts near Beera’s field suffered from these problems as they inhaled the harmful fumes and gases released by the burning of dry By the method of composting, dry leaves can be put in a pit and composed which is a method of preparing It is an environment friendly way to dispose the dry leaves. Farmers can use this manure
- ScienceClass 6CBSE
Paheli was writing a letter to her friend. She crumpled and threw the first draft of her letter on the floor as it had become untidy. Similarly she crumpled and threw 6 more papers on the ground. In the end, she picked them up and put them in a polythene bag and threw it on the road outside her house. Do you think Paheli’s action were responsible? What would you have done if you were in her place?
Solution: No, Paheli’s action was that of an irresponsible citizen. By doing so, she is polluting the environment. Instead of wasting the used papers, she could use them in different ways. She is adding non-biodegradable waste to the environment by throwing polythene bag on the road. If I were, at her place, then I would have either used the waste paper for doing rough work or converted the waste paper into paper pulp for decorating purpos
- ScienceClass 6CBSE
1. To what use can you put the following kinds of garbage and how? (i) Rotting smelly garbage (ii) Dry leaves collected in a garbage Old newspapers
Solution: Rotting smelly garbage is a biodegradable It can be converted into compost or vermicompost. Compost can be made by burying the organic waste such as fruit peels, vegetable peels, dry leaves etc. into a pit and covering it with soil. Vermicompost is made by using earthworms. Dry leaves collected in a garbage can are converted into compost or Old newspapers can be used for making the paper bags, paper pulp for use in <
- ScienceClass 6CBSE
Provide the suitable term that expresses the meaning of each of the following statements. (a) Greeting cards made from newspaper. (b) Contents of the waste bins. (c) Worms converting certain kinds of waste into manure. An area where a lot of garbage is collected, spread out and covered with soil.
Solution: Recycling Garbage Vermicomposting Landfill
- ScienceClass 6CBSE
Correct the definitions of certain terms given below by changing only one word. (i) Compost: Substances converted into manure for use in industries. (ii) Landfill: Garbage buried under water in an area. Recycling: Reuse of unused material in the same or another form.
Solution: Compost: It is a process in which substances converted into manure for use in agricultural fields. Landfill: It is a process in which garbage buried under soil in an Recycling: It is a process in which reusing of used materials in the same or another
- ScienceClass 6CBSE
Read the items mentioned in columns-l and II and fill in the related process in the column III. Column I Column II Column III (a) Organic waste Earthworms (i) …………… (b) Garbage Dig pit and fill with garbage (ii) …………... (c) Old newspaper Paper bags (iii) …………...
Here is correct process: Column I Column II Column III (a) Organic waste Earthworms (i) Vermicomposting (b) Garbage Dig pit and fill with garbage <td width="
- ScienceClass 6CBSE
1. The steps required for conversion of kitchen garbage into manure are given below in a jumbled form. (i) Put garbage in a pit. (ii) Cover the bottom of the pit with sand. (iii) Cover the pit loosely with a gunny bag or grass. (iv) Add worms. Which of the following shows the correct sequence of the above steps? (a) (ii); (i); (iii); (iv) (b) (i); (ii); (iii); (iv) (c) (ii); (iv); (i); (iii) (iv); (i); (ii); (iii)
Solution: None of the options are correct. The correct option should be (ii); (i); (iv); (iii).
- ScienceClass 6CBSE
A garbage collector separate items mentioned below in the garbage into red, green and blue containers for their transfer to landfill, composting pit, and recycling unit respectively. Items: (i) Plastic bags (ii) Newspaper and journals (iii) Screw and nuts (iv) Vegetable peels (v) Metal chips (vi) Egg shells Which item was transferred to which bin? RED GREEN BLUE (a) (i) and (iv) (ii) and (iii) (v) and (vi) (b) (i) and (iii) (ii) and (v) (iv) and (vi) (c) (i), (iii) and (v) (iv) and (vi) (ii) only (d) (i) and (v) (ii) and (iv) (iii) only
Solution: (c): (i), (iii) and (v) (iv) and (vi) (ii) only Red bin containing, Plastic bags, screw and nuts, metal chips are non-degradable so they should be transferred to a landfill. Green bin containing, Vegetable peels and egg shells are biodegradable
- ScienceClass 6CBSE
Paheli gave the following ill effects of the practice of burning dried leaves and other plant parts. (i) Burning degrades the soil. (ii) Burning produces harmful gases/fumes. (iii) Precious raw materials to obtain manure at low cost is lost. (iv) Lot of heat is generated unnecessarily. The correct reasons of why we should not burn leaves are (a) i, ii and iv only (b) i, ii, iii and iv (c) ii and iii only (d) ii, iii and iv only.
Solution: (b): i, ii, iii and iv Burning degrades the soil and also results in the loss of precious raw material that could be converted into useful compost. Burning of dried leaves and other plant parts produces smoke and harmful gases/fumes that generate a lot of heat and are harmful to our health.
- ScienceClass 6CBSE
1. Which of the following activities does not reflect responsible behavior with regard to waste disposal? (a) Goods carried m paper bags or cloth bags. (b) Waste collected in polythene bags for disposal. (c) Waste separated into those that degrade and those that do not. Making handicrafts with used up notebooks.
Solution: : Waste collected in polythene bags for Polythene bags are non-biodegradable. They remain as such in the environment and are very harmful for the nature. Hence waste collected in polythene bags reflects irresponsible behavior.