🌟 Waste Management – Class 4 DAV Social Science Book Solution
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In this blog, we provide easy and student-friendly solutions for “Waste Management”, Chapter 6 of the Class 4 DAV Social Science Book. This content is designed to help students understand the chapter clearly, complete their homework, revise important concepts, and prepare confidently for school examinations.
📖 Waste Management – Class 4 DAV Social Science
Class: 4
Subject: Social Science
Book: DAV Social Science
Chapter: 6
Chapter/Topic: Waste Management
🌟 What You Will Learn
In this chapter, students will learn about:
- Meaning of waste
- Different types of waste
- Wet and dry waste
- Sources of waste
- Importance of proper waste disposal
- Reduce, Reuse and Recycle
- Importance of cleanliness
- Segregation of waste
- Composting of biodegradable waste
- Harmful effects of improper waste disposal
- Ways to keep our surroundings clean
- Our responsibility towards the environment
- Important questions and answers
- DAV Social Science book exercise solutions
- Easy revision notes for Class 4 students
The explanations are written in simple and easy language so that Class 4 students can understand the concepts comfortably and revise them quickly.
📚 DAV Class 4 SST – Chapter 6
Waste Management – Complete Solutions
🌟 Introduction
Welcome to YASRAJ STUDIES! 📚🎓
In this post, we provide complete and easy-to-understand solutions for DAV Class 4 SST Chapter 6 – Waste Management.
Waste management means collecting, treating, reusing, recycling and properly disposing of waste. Proper waste management helps us keep our home, school, neighbourhood and environment clean and healthy.
A. Tick (✓) the Correct Option
Question 1.
Animal and plant waste can be burnt in a furnace to produce—
(a) Biogas
(b) LPG
(c) Natural Gas
Answer:
(a) Biogas ✓
Explanation:
Animal and plant waste can be processed to produce biogas. Biogas can be used as a fuel for domestic purposes.
Question 2.
It is the duty of __________ to keep our surroundings clean and green.
(a) The government
(b) Citizens
(c) The people and government – both
Answer:
(c) The people and government – both ✓
Explanation:
Keeping our surroundings clean is a shared responsibility. Citizens and the government should work together to maintain clean and green surroundings.
Question 3.
It is easy to recycle—
(a) Plastic
(b) Fruits and vegetable peels
(c) Both
Answer:
(c) Both ✓
Explanation:
The chapter considers both plastic and fruits and vegetable peels as materials that can be recycled or processed for useful purposes.
Question 4.
Construction waste can be used for—
(a) Filling ditches
(b) Building walls
(c) Making pots
Answer:
(a) Filling ditches ✓
Explanation:
Some construction waste can be reused for filling ditches, instead of simply throwing it away.
B. Fill in the Blanks
Help Box: environment, soil, compost, clean, rethink
Question 1.
Human waste in open fields must be covered with __________ in rural areas.
Answer:
Soil
Explanation:
Covering human waste with soil helps keep the surroundings cleaner and reduces exposure to waste.
Question 2.
Recycling is beneficial for the __________.
Answer:
Environment
Explanation:
Recycling reduces waste and pollution and helps conserve natural resources.
Question 3.
Biodegradable waste can be used to make __________.
Answer:
Compost
Explanation:
Biodegradable materials such as leaves and vegetable peels can decompose and be converted into compost, which can be used as manure.
Question 4.
Waste disposal is important to keep our surroundings __________.
Answer:
Clean
Explanation:
Proper disposal of waste prevents the accumulation of garbage and helps keep our surroundings clean.
Question 5.
The four Rs to reduce waste are reduce, reuse, recycle and __________.
Answer:
Rethink
Explanation:
The four Rs mentioned in the chapter are Reduce, Reuse, Recycle and Rethink. Rethink means thinking carefully before buying, using or throwing something away.
C. Match the Following
| Column A | Answer | Explanation |
|---|---|---|
| 1. Biodegradable waste | (b) can be converted into harmless substances | Such waste can decompose naturally. |
| 2. Non-biodegradable waste | (a) cannot be easily waste | Such waste does not easily become harmless substances. |
| 3. All living beings | (c) animals and humans both | Animals and humans are living beings. |
| 4. Recycling will | (d) produce waste, benefit | Recycling helps reduce waste and benefits the environment. |
Answers:
1 – (b)
2 – (a)
3 – (c)
4 – (d)
The matching answers are given in the source material.
D. Answer the Following Questions
Question 1.
What is waste? Name three diseases caused by waste materials thrown in open areas.
Answer:
Waste is any material that is no longer needed and is thrown away.
Three diseases caused by waste materials thrown in open areas are:
- Dysentery
- Typhoid
- Cholera
Explanation:
Open waste can make the surroundings dirty and unhealthy. It can become a source of diseases.
Question 2.
Highlight two differences between biodegradable and non-biodegradable waste.
Answer:
| Biodegradable Waste | Non-Biodegradable Waste |
|---|---|
| It can be converted into harmless substances. | It cannot be easily converted into harmless substances. |
| It generally decomposes naturally. | It remains in the environment for a long time and can cause environmental problems. |
Explanation:
Biodegradable waste can break down into harmless substances, whereas non-biodegradable waste is difficult to decompose.
Question 3.
What are benefits of recycling?
Answer:
The benefits of recycling are:
- It reduces the amount of waste.
- It conserves natural resources such as timber, water and iron.
- It reduces pollution.
- It saves energy.
Explanation:
Recycling converts used materials into useful products. Therefore, fewer natural resources are needed and less waste reaches disposal sites.
Question 4.
Mention any two methods of waste disposal. Which one is the best in your opinion? Give one reason.
Answer:
Two methods of waste disposal are:
- Recycling
- Making compost
Recycling:
Materials such as paper, iron, copper, aluminium, plastic and glass can be recycled and made into useful items.
Making Compost:
Biodegradable waste such as dry leaves, vegetable and fruit peels, eggshells and leftover food can be put into a pit and covered with soil. Over time, it becomes compost that can be used as manure.
Best Method:
In my opinion, recycling is the best method because it reduces the amount of waste and helps protect the environment.
Question 5.
Suggest two ways of reusing waste materials from our homes, schools and offices.
Answer:
Two ways are:
- Making compost: Biodegradable waste such as dry leaves, fruit and vegetable peels can be converted into compost. Compost is useful as manure for plants.
- Producing biogas: Animal and plant waste can be processed to produce biogas, which can be used as a domestic fuel.
Explanation:
Instead of throwing useful waste away, we can process or reuse it to make useful products.
E. Waste Management Puzzle
Complete the puzzle using the clues.
Clues Across (→)
1.
To use something again.
Answer: REUSE
3.
To give away something to someone.
Answer: DONATE
4.
Something useless.
Answer: WASTE
Clues Down (↓)
2.
Converting a useless article to a useful one.
Answer: RECYCLE
5.
A bag can be used again.
Answer: REUSE
6.
A bucket can be __________.
Answer: RECYCLED
The chapter provides these clues as part of the Waste Management puzzle.
🌱 Value-Based Question
Question:
A.R. Rehman has become famous all over the world for his contribution to music. What would be your contribution if you are made an incharge of waste management in your school?
Answer:
If I am made in charge of waste management in my school, I will take the following steps:
- I will keep a dustbin with a lid in every classroom.
- I will place big dustbins at suitable places in the school.
- I will ask the gardener to collect dry leaves and put them in a compost pit.
- I will encourage students not to throw waste on the ground.
- I will encourage everyone to reduce, reuse and recycle waste.
Explanation:
Good waste management requires everyone's cooperation. Keeping waste in proper bins and using biodegradable waste for compost can help keep the school clean.
🌿 Something To Do
Question 1.
List down any four items thrown away as garbage in your house everyday.
Answer:
Four common items are:
- Fruit and vegetable peels
- Leftover food items
- Eggshells
- Paper
Explanation:
These are common household waste materials. Many of them are biodegradable and can be used for composting.
Question 2.
Can you reduce the waste that your family creates everyday? How?
Answer:
Yes, I can reduce the waste created by my family.
I can:
- Separate biodegradable and non-biodegradable waste.
- Make compost from fruit and vegetable peels.
- Reuse useful materials.
- Recycle paper, plastic, glass and metal whenever possible.
- Avoid unnecessary use of disposable items.
Explanation:
Reducing and reusing waste helps decrease the amount of garbage produced by our family.
Question 3.
Do you sell any waste materials to the kabariwala (trash dealer)? Find out. How much does he pay for—
(a) One kilogram newspaper? __________
(b) One kilogram plastic goods? __________
Answer:
Do yourself.
Explanation:
The price paid for waste materials can vary according to the place, material and current scrap rate. Students can ask a local kabariwala and write the rates they find.
Question 4.
Log on to the Internet and find out about any inspiring individual/organisations working in India/abroad on recycling/waste management for saving the environment like NDTV News Channel has taken the project ‘Save Our Tigers’.
Answer:
Do yourself.
Explanation:
Find an organisation or individual working for recycling, waste reduction or environmental protection and write a few lines about their work.
Question 5.
Where do you throw your household garbage? Do you reuse waste materials? How? Who takes away the garbage from your home? Where does he/she throw it?
Answer:
We collect our household garbage in a dustbin. A sweeper collects the garbage and takes it away in a cart. The garbage is then transported in garbage trucks for proper disposal.
We also try to reuse and recycle useful waste materials whenever possible.
Explanation:
Household waste should be collected properly instead of being thrown on roads or in open spaces.
Question 6.
Start a club in your school that encourages and trains students in environmental protection in the school, at home and in the neighbourhood.
Activities:
(a) Save paper by collecting waste papers from classes, corridors, question-papers, circulars, etc. This paper can be reused or recycled.
(b) Start a compost pit in your school, neighbourhood or home.
(c) Prepare a project for a water-harvesting system in your school or neighbourhood with the help of your parents and teachers.
(d) Start an initiative to share special tools and seldom-used household appliances among neighbours.
Answer:
Do yourself.
Explanation:
Such activities teach students how to protect the environment by reducing waste, recycling materials and saving natural resources.
Question 7.
Project – Save Environment
Cover the following points:
(a)
Encourage your family to use public transport, walk or ride bicycles rather than using the car over short distances.
(b)
Save energy by turning off lights, radio and television when not in use.
(c)
Turn off the tap while brushing your teeth.
(d)
Make use of a bucket instead of a shower while having a bath.
(e)
Use a cloth bag and refuse polythene bags.
(f)
Donate your old story and textbooks, toys and games to school, daycare, or nearby hospital.
Answer:
Prepare this project with the help of your parents and teachers.
Explanation:
These simple habits help us save energy and water, reduce waste and reuse useful items. They also encourage us to take care of our environment.
📌 Quick Revision Notes
- Waste is material that is no longer needed.
- Biodegradable waste can be converted into harmless substances.
- Non-biodegradable waste does not easily decompose.
- Recycling reduces waste and pollution.
- Compost can be made from biodegradable waste.
- The Four Rs are Reduce, Reuse, Recycle and Rethink.
- Waste should not be thrown in open areas.
- Proper waste management keeps our surroundings clean and healthy.
- We should work together to protect our environment.
🌍 Learn • Practice • Revise • Succeed!
YRS YASRAJ STUDIES 📚🎓
#DAVClass4 #SST #WasteManagement #DAVSolutions #YASRAJSTUDIES #Class4SST #WasteManagementSolutions
🗑️ What Is Waste?
Waste is any unwanted or unusable material that we throw away.
Waste is produced in our homes, schools, offices, markets, factories and other places.
Examples of waste include:
- Vegetable peels
- Paper
- Plastic bags
- Bottles
- Food waste
- Old newspapers
- Broken items
Proper management of waste is important for a clean and healthy environment.
🌱 Types of Waste
Waste can be divided into different categories.
1. Wet Waste
Wet waste mainly includes biodegradable materials such as:
- Vegetable peels
- Fruit peels
- Leftover food
- Leaves
- Tea leaves
Much of this waste can be used to make compost.
2. Dry Waste
Dry waste includes materials such as:
- Paper
- Plastic
- Glass
- Metal
- Cardboard
Many dry waste items can be reused or recycled.
♻️ Waste Management
Waste management means collecting, separating, treating, reusing, recycling and safely disposing of waste.
Good waste management helps keep our homes, schools and surroundings clean.
♻️ The 3 Rs
The 3 Rs help us manage waste properly.
1. Reduce
We should reduce the amount of waste we produce.
For example, avoid buying unnecessary items and avoid using single-use products whenever possible.
2. Reuse
We should use things again instead of throwing them away.
For example, jars, boxes and bags can sometimes be used again.
3. Recycle
Some waste materials can be processed and made into new products.
Paper, glass, metal and some plastics can be recycled.
Reduce → Reuse → Recycle
🟢 Waste Segregation
Waste segregation means separating different types of waste.
Wet and dry waste should be kept separately so that they can be treated properly.
Using separate bins for different types of waste helps in recycling and composting.
🌿 Composting
Composting is the process of converting biodegradable waste into useful manure.
Vegetable peels, fruit peels, leaves and other organic waste can be used for making compost.
Compost is useful for plants and gardens.
🌍 Harmful Effects of Improper Waste Disposal
If waste is not disposed of properly, it can:
- Make our surroundings dirty.
- Cause bad smells.
- Attract flies and mosquitoes.
- Spread diseases.
- Pollute air, water and soil.
- Harm animals and plants.
- Block drains and cause waterlogging.
Therefore, we should always dispose of waste properly.
🧹 How Can We Keep Our Surroundings Clean?
We can keep our surroundings clean by:
- Using dustbins.
- Separating wet and dry waste.
- Avoiding littering.
- Reducing the use of unnecessary plastic.
- Reusing useful items.
- Recycling suitable materials.
- Keeping our homes and schools clean.
- Encouraging others to follow good waste-management habits.
🌟 Our Responsibility
Keeping the environment clean is everyone's responsibility.
Children can also help by:
- Throwing waste only in dustbins.
- Keeping their classroom clean.
- Avoiding unnecessary waste.
- Reusing things whenever possible.
- Separating waste correctly.
- Taking part in cleanliness activities.
- Teaching others about proper waste management.
Small actions by everyone can make our environment cleaner and healthier.
📚 Important Questions and Answers
1. What is waste?
Waste is any unwanted or unusable material that we throw away.
2. What is waste management?
Waste management is the proper collection, separation, treatment, reuse, recycling and disposal of waste.
3. What is wet waste?
Wet waste mainly consists of biodegradable materials such as leftover food, vegetable peels, fruit peels and leaves.
4. What is dry waste?
Dry waste includes materials such as paper, plastic, glass, metal and cardboard.
5. What are the 3 Rs of waste management?
The 3 Rs are:
Reduce – Reuse – Recycle
6. Why should we separate waste?
We should separate waste so that different types of waste can be properly treated, reused, recycled or composted.
7. What is composting?
Composting is the process of converting biodegradable waste into useful manure.
8. What are the harmful effects of improper waste disposal?
Improper waste disposal can cause pollution, bad smells, diseases, blocked drains and harm to animals and plants.
9. How can children help in waste management?
Children can help by using dustbins, separating waste, reducing unnecessary waste, reusing useful things and keeping their surroundings clean.
📝 Quick Revision Notes
Remember:
Waste Management → Reduce + Reuse + Recycle
- Waste means unwanted material.
- Waste can be wet or dry.
- Wet waste includes food scraps, fruit peels and vegetable peels.
- Dry waste includes paper, plastic, glass and metal.
- Waste should be separated properly.
- Biodegradable waste can be used for composting.
- The 3 Rs are Reduce, Reuse and Recycle.
- We should never throw waste in open places.
- Proper waste management keeps our environment clean and healthy.
- Everyone has a responsibility to manage waste properly.
📚 Class 4 DAV Social Science Book Solutions
This blog is useful for Class 4 DAV students, parents, and teachers who are looking for simple study material, homework help, revision notes, and DAV Social Science book solutions.
Students can use these notes to:
- Understand the chapter easily
- Complete their homework
- Revise important concepts
- Prepare for class tests
- Prepare for school examinations
🎯 Why Read This Blog?
Here are some useful features of our Class 4 DAV Social Science solutions:
- Easy-to-understand explanations
- Chapter-wise learning support
- Important questions and answers
- Quick revision notes
- Helpful for DAV school examinations
- Simple and student-friendly language
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