AP 4th Class EVS Workbook Answers – 6. Water Sources (2026-27)

Class 4 EVS – 6. Water Sources – Workbook Solutions

Workbook Answer Key: Questions are kept in the same order as the workbook. Questions are in black and answers are in blue. The page separator www.meebadi.in is included between workbook sections.

WORKSHEET – 1

Concept: Water sources in our villages

I. Rewrite the following words two times.

Essential	Living beings	Rain	Resources	River
Streams	Puddles	Ponds	Lakes	Canals

Essential – Essential; Living beings – Living beings; Rain – Rain; Resources – Resources; River – River; Streams – Streams; Puddles – Puddles; Ponds – Ponds; Lakes – Lakes; Canals – Canals.

II. Write any four natural water sources.

River, stream, pond, lake.

III. Read the following paragraph and answer the given questions.

Water is very important for all living beings. We get water mainly from rain. Rainwater flows into rivers, ponds, and lakes. People use water for drinking, washing, cooking, and farming. Canals carry river water to fields. Wells and bore wells give groundwater for daily use.

1. For whom is water important?
   Water is important for all living beings.
2. What is the main source of water?
   Rain is the main source of water.
3. What carries river water to the fields?
   Canals carry river water to the fields.
4. From which sources do we get groundwater?
   We get groundwater from wells and bore wells.

IV. True (T) or False (F).

1. Water is essential for all living beings.
   True (T)
2. Rain is the main source of water.
   True (T)
3. We cannot live without water.
   True (T)
4. We can carry water from rivers.
   True (T)
5. Ponds are useless for farming.
   False (F)

V. Answer the following questions in two or three sentences.

1. Write the uses of water in your daily life.
   We use water for drinking, cooking, washing and bathing. We also use water for cleaning, gardening and other daily activities.
2. Why is rain an important source of water?
   Rain provides water to rivers, ponds and lakes and also helps recharge groundwater. Therefore, rain is an important source of water.
3. Which type of water sources are used in your daily activities?
   We use groundwater from wells or bore wells and surface water supplied through taps. Rivers, ponds and other water sources are also useful for farming and other activities.

VI. Answer the following questions in four or five sentences.

1. Ask your parents about the water sources used for agricultural work in your village and write about them.
   In our village, agricultural work may depend on wells, bore wells, ponds, rivers and canals. Rainwater is also an important source for farming. Canals can carry river water to fields. Wells and bore wells provide groundwater when surface water is not sufficient. Farmers use these sources carefully for growing crops.
2. Is it better to use rainwater for gardening instead of tap water? Why?
   Yes, it is better to use rainwater for gardening whenever it is safely collected. It reduces the use of treated tap water and helps conserve water. Rainwater can be collected and stored for watering plants. This is a useful way to save water.

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WORKSHEET – 2

Concept: Water pollution

I. Rewrite the following words two times.

Pollution	Harmful	Typhoid	Waste	Disease
Cholera	Microorganisms	Jaundice	Boiling	Toilets

Pollution – Pollution; Harmful – Harmful; Typhoid – Typhoid; Waste – Waste; Disease – Disease; Cholera – Cholera; Microorganisms – Microorganisms; Jaundice – Jaundice; Boiling – Boiling; Toilets – Toilets.

II. True (T) or False (F).

1. Throwing waste in ponds causes water pollution.
   True (T)
2. Clean water is harmful to health.
   False (F)
3. Washing animals in ponds pollutes water.
   True (T)
4. Dirty water can cause diseases.
   True (T)
5. Boiling water makes it safe to drink.
   True (T)

III. Read the following paragraph and answer the given questions.

In many villages, people wash clothes, cattle and vehicles in ponds. Some people throw garbage into water and use pond banks as toilets. These activities pollute water. Polluted water contains harmful germs. Drinking such water causes diseases like typhoid and cholera. So, we should boil water before drinking and keep water sources clean.

1. Which activities pollute pond water?
   Washing clothes, cattle and vehicles in ponds, throwing garbage into water and using pond banks as toilets pollute pond water.
2. What happens when garbage is thrown into ponds?
   Garbage pollutes the pond water and makes it dirty. It can also make the water unsafe for people and animals.
3. Name two diseases caused by dirty water.
   Typhoid and cholera.
4. What should we do before drinking water?
   We should boil water before drinking it.

IV. Fill in the blanks using the clues.

Clues: boil, cattle, germs, polluted water, water pollution

1. People wash ______ and clothes in ponds.
   cattle
2. Garbage thrown into water causes ______.
   water pollution
3. Dirty water contains harmful ______.
   germs
4. Drinking ______ causes diseases.
   polluted water
5. We should ______ water before drinking.
   boil

V. Answer the following questions in two or three sentences.

1. Write two ways to prevent water pollution.
   We should not throw garbage or waste into ponds, rivers or other water sources. We should keep water sources clean and avoid washing animals or vehicles in drinking-water sources.
2. You see a tap left open in your school. What will you do?
   I will close the tap immediately to stop water wastage. I will also inform my teacher and encourage other students to use water carefully.

VI. Answer the following questions in four or five sentences.

1. In earlier days, people used to drink water from wells and ponds. Why are they not drinking that water now? Ask your parents or elders in your village and write information about this change.
   Earlier, wells and ponds were often cleaner and were used directly by people. Over time, pollution, waste and other activities may have made some water sources unsafe. People now use treated or supplied water and may boil or filter water before drinking. This change helps reduce the risk of diseases caused by polluted water.
2. Dirty water enters a pond where people wash clothes. How will this affect the people and animals using the pond?
   Dirty water can contain harmful germs and pollutants. People who use the water may suffer from diseases. Animals drinking the polluted water may also become sick. Therefore, the pond should be kept clean and protected from waste and dirty water.

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WORKSHEET – 3

Concept: Saving water and water purification

I. Rewrite the following words two times.

Purification	Tank	Chlorination	Filter	Pipeline
Treatment	Sedimentation	Bleaching	Drinking	Supply

Purification – Purification; Tank – Tank; Chlorination – Chlorination; Filter – Filter; Pipeline – Pipeline; Treatment – Treatment; Sedimentation – Sedimentation; Bleaching – Bleaching; Drinking – Drinking; Supply – Supply.

II. Arrange the following stages of water purification in the correct sequential order.

3. Pond (water source) → 6. Sedimentation tank → 1. Filtration tank → 4. Chlorination tank → 5. Overhead tank → 2. Distribution to houses.

III. Read the following paragraph and answer the given questions.

Grama Panchayats supply safe drinking water to houses. Water from ponds and rivers is cleaned in water treatment plants. First, water is sent to sedimentation tanks where sand and mud settle down. Then it goes to filtration tanks to remove small dirt. After that, chlorine is added to kill germs. The clean water is stored in overhead tanks and supplied to homes through pipes.

1. Who supplies safe drinking water in villages?
   Grama Panchayats supply safe drinking water in villages.
2. What is the use of filtration?
   Filtration removes small dirt particles from water.
3. Why is chlorine added to water?
   Chlorine is added to kill germs in the water.
4. How do we get drinking water at home?
   Clean water is stored in overhead tanks and supplied to homes through pipes.

IV. Fill in the blanks.

1. Water is cleaned in ______ plants.
   treatment
2. Sand settles in the ______ tank.
   sedimentation
3. ______ removes small dirt particles.
   Filtration
4. Chlorine is added to kill ______.
   germs
5. Water reaches homes through ______.
   pipes

V. Answer the following questions in two or three sentences.

1. Why should we boil water before drinking?
   Boiling helps kill harmful germs present in water. It makes water safer to drink.
2. “Saving water is everyone's duty.” Do you agree? Give reasons.
   Yes, I agree. Water is essential for all living beings and is needed every day. We should avoid wasting water because clean water is limited and important for future needs.
3. How can you use water carefully while brushing your teeth?
   I will close the tap while brushing my teeth and open it only when I need water. This prevents unnecessary water wastage.

VI. Do the following activity.

1. Draw a flow chart showing the purification of water.

Pond / River
Water Source→ Sedimentation
Tank→ Filtration
Tank→ Chlorination
Tank→ Overhead
Tank→ Houses

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WORKSHEET – 4

Concept: Sorrow of the pond, journey of rain drop

I. Rewrite the following words two times.

Agriculture	Greed	Dry	Hyacinth	Holding
Capacity	Algae	Initial	Obstruct	Society

Agriculture – Agriculture; Greed – Greed; Dry – Dry; Hyacinth – Hyacinth; Holding – Holding; Capacity – Capacity; Algae – Algae; Initial – Initial; Obstruct – Obstruct; Society – Society.

II. True (T) or False (F).

1. Low rainfall can dry up ponds.
   True (T)
2. Water hyacinth helps store more water.
   False (F)
3. Cleaning ponds is our responsibility.
   True (T)
4. Sunlight helps water change into vapour.
   True (T)

III. Read the following paragraph and answer the given questions.

Many village ponds are drying up due to low rainfall and over use of water. People also throw waste into water and pollute ponds. Water hyacinth and algae grow in ponds and block the flow of water. This reduces the storage capacity. To protect ponds, people and the government should work together. Under the sun, water slowly changes into vapour. This process is called evaporation.

1. Why are village ponds drying up?
   Village ponds are drying up due to low rainfall and overuse of water.
2. How do plants affect ponds?
   Water hyacinth and algae grow in ponds and block the flow of water. They reduce the storage capacity of ponds.
3. What reduces the storage capacity?
   Water hyacinth and algae reduce the storage capacity of ponds.
4. Who will protect ponds?
   People and the government should work together to protect ponds.

IV. Fill in the blanks.

1. The main reason for drying ponds is low ______.
   rainfall
2. ______ and algae grow in ponds.
   Water hyacinth
3. Water changes into ______ under the sun.
   vapour
4. Cleaning ponds increases water ______ capacity.
   storage

V. Answer the following question in two or three sentences.

1. How can we protect ponds?
   We should not throw garbage or waste into ponds. We should remove unwanted plants such as water hyacinth and algae and work together to keep ponds clean and protect their storage capacity.

VI. Do the following activity.

2. Draw and colour the diagram of water cycle and label the processes.

Water in rivers,
ponds & seas→ Evaporation→ Water vapour→ Condensation→ Clouds→ Precipitation / Rain

VII. Answer the following question in four or five sentences.

1. How can you help in keeping your village pond clean?
   I will not throw garbage, plastic or other waste into the pond. I will tell others not to pollute the pond. I will take part in cleaning activities and help remove unwanted plants when guided by adults. I will also encourage people to protect the pond and use its water carefully.

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WORKSHEET – 5

Concept: Water cycle and properties of water

I. Rewrite the following words two times.

Evaporation	Condensation	Precipitation	Water cycle	Vapour
Dissolve	Property	Substances	Process	Cloud

Evaporation – Evaporation; Condensation – Condensation; Precipitation – Precipitation; Water cycle – Water cycle; Vapour – Vapour; Dissolve – Dissolve; Property – Property; Substances – Substances; Process – Process; Cloud – Cloud.

II. Match the following.

Column A	Answer	Column B
1. Evaporation	B	A. Gives heat
2. Condensation	E	B. Water turns into vapour
3. Rain	D	C. Formed from water vapour
4. Clouds	C	D. Water falls down
5. Sunlight	A	E. Vapour turns into water

III. Read the following paragraph and answer the given questions.

Water in rivers, ponds, and seas changes into vapour due to the heat of the sun. This is called evaporation. The vapour rises and forms clouds. When the clouds cool, vapour changes into water droplets. This is called condensation. When the droplets become heavy, they fall as rain. This is called precipitation. Water can dissolve many substances like salt and sugar.

1. Evaporation happens due to

A) Cold    B) Wind    C) Heat    D) Rain

Answer: C) Heat

2. Vapour changes into water by:

A) Evaporation    B) Condensation    C) Precipitation    D) Freezing

Answer: B) Condensation

3. Rain is also called:

A) Condensation    B) Evaporation    C) Precipitation    D) Melting

Answer: C) Precipitation

4. Which dissolves in water?

A) Sand    B) Oil    C) Sugar    D) Stone

Answer: C) Sugar

5. Clouds are made of:

A) Smoke    B) Water vapour    C) Dust    D) Fire

Answer: B) Water vapour

IV. Fill in the blanks.

1. Water changes into ______ due to heat.
   vapour
2. Clouds are formed from ______.
   water vapour
3. Cooling changes vapour into ______.
   water droplets
4. Heavy droplets fall as ______.
   rain
5. Salt and sugar ______ in water.
   dissolve

V. Answer the following questions in two or three sentences.

1. Explain the water cycle.
   Water changes into vapour by evaporation due to the heat of the sun. The vapour forms clouds, changes into water droplets by condensation and falls as rain through precipitation. This continuous movement is called the water cycle.
2. What is evaporation?
   Evaporation is the process in which water changes into vapour due to heat, especially the heat of the sun.
3. Write about the dissolving property of water.
   Water can dissolve many substances. For example, salt and sugar dissolve in water. This ability of water to dissolve substances is called its dissolving property.

VI. Answer the following questions in four or five sentences.

1. Why is rainwater harvesting useful?
   Rainwater harvesting helps collect and store rainwater for later use. It reduces dependence on other water sources and helps conserve water. Collected rainwater can be used for gardening and other suitable purposes. It can also help recharge groundwater when properly managed.
2. Draw a simple flow chart showing the journey of drinking water from rain to our homes.
   Rain→River / Pond→Water Treatment→Overhead Tank→Pipes→Our Homes

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ASSESSMENT

I. Multiple Choice Questions.

1. Which of the following is a natural source of water?

A) Tap    B) River    C) Water tanker    D) Water bottle

Answer: B) River

2. Rainwater that collects under the ground is called

A) Seawater    B) Groundwater    C) Dirty water    D) Drinking water

Answer: B) Groundwater

3. Which of the following is not a cause of pond water pollution?

A) Washing clothes at pond    B) Using pond banks for toilets    C) Factory chemicals    D) Rainwater

Answer: D) Rainwater

4. When wet clothes dry under the sun, it happens because of:

A) Freezing    B) Melting    C) Evaporation    D) Condensation

Answer: C) Evaporation

5. The water supplied through taps is not clear. What should you do before using it?

A) Drink it directly    B) Throw it away    C) Filter or boil and cool    D) Add sugar

Answer: C) Filter or boil and cool

II. Answer the following questions in two or three sentences.

1. Write two 'water-saving rules' that you will follow at home or school.
   I will close taps when water is not needed and will not leave taps running while brushing. I will also use only the amount of water needed for washing, cleaning and other activities.
2. Write any three diseases caused due to water pollution.
   Typhoid, cholera and jaundice.
3. Why do we build water tanks and pipelines to supply water?
   Water tanks store water so that it can be supplied when needed. Pipelines carry the stored and treated water from the source or tank to homes and other places.

III. Answer the following questions in four or five sentences.

1. Two villages get water in different ways: Village A gets water from a river, Village B from wells. What could happen if there is no rain in that area for many months?
   If there is no rain for many months, river water may decrease and the river may become dry. The water level in wells may also fall because groundwater is not recharged by rain. Both villages may face water shortages. People may have difficulty getting enough water for drinking, farming and daily activities. Therefore, water should be conserved and used carefully.
2. What problems do villagers face when the village pond dries up?
   Villagers may lose an important source of water for daily needs and farming. Animals may also have less water to drink. Groundwater may become less available when there is little rain and less water stored in the pond. People may have to travel farther or depend on other water sources. Therefore, protecting ponds and saving water are important.

IV. Answer the following questions in five or six sentences.

Define the following terms.

1. Evaporation
   Evaporation is the process by which water changes into water vapour due to heat. The heat of the sun causes water in rivers, ponds and seas to evaporate. The water vapour rises into the air. Evaporation is an important part of the water cycle.
2. Condensation
   Condensation is the process by which water vapour changes into tiny water droplets. When water vapour rises and cools, it changes into water droplets. These droplets collect to form clouds. Condensation is an important step in the water cycle.
3. Precipitation
   Precipitation is the process in which water falls from clouds to the Earth. When water droplets in clouds become heavy, they fall as rain. Rain is a form of precipitation. It returns water to the land and water bodies.
4. Water pollution
   Water pollution occurs when waste, germs or other harmful substances make water dirty and unsafe. Throwing garbage into ponds and rivers can pollute water. Washing clothes, animals or vehicles in water sources can also cause pollution. Polluted water can cause diseases, so water sources should be kept clean.

Class 4 EVS – 6. Water Sources
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