STD 3 EVS Water Awareness Complete Textbook Solutions
STD 3 Water Awareness Question Answers | SCERT Maharashtra
6.Water Awareness
STD 3 EVS
Water Conservation
Textbook Question Answers (Digest Format)
Did You Know?
Q.1) What happened in Latur due to water shortage?
Answer:
There was once a severe shortage of water in Latur. At that time, the Government supplied drinking water to the city through water trains.
Let’s Discuss
Q.1) What do you do to save water?
Answer:
I save water by:
- Turning off the tap while brushing.
- Using only the required amount of water.
- Reusing water for watering plants.
- Repairing leaking taps.
- Avoiding wastage of water.
Rainwater โ Where Does It Fall?
Answer:
Rainwater falls on:
- Roofs of houses
- Roads
- Hill slopes
- Ground
Groundwater Conservation
Q.1) How can we save water?
Answer:
We can save water by collecting rainwater in tanks and allowing it to seep into the ground through soak pits. This helps increase the groundwater level.
Did You Know?
Q.2) Who established Vanarai?
Answer:
Vanarai was established by Mohan Dharia.
Q.3) What are Vanarai Bunds?
Answer:
Vanarai Bunds are small check dams built across streams and drains. They slow down the flow of water and allow it to seep into the ground, helping to increase the groundwater level.
Saving Water
Important Points
- Sources of drinking water are limited.
- Rainfall is not the same everywhere.
- The demand for water is increasing because of the growing population.
- Water should be used carefully.
- Water sources should be kept clean to prevent pollution.
Did You Know?
Q.4) Where is wastewater collected and purified for reuse?
Answer:
Wastewater is collected and purified for reuse in Jakatwadi village of Satara district.
Q.5) How is the treated water used in Jakatwadi village?
Answer:
The treated water is used for:
- Fruit orchards
- Backyard gardens
- Maintaining cleanliness
Think About It
Q.6) How can you reuse the water already used at home?
Answer:
Used water can be reused for:
- Watering plants
- Cleaning floors
- Washing vehicles
- Maintaining gardens
Good Habits to Save Water
Answer:
- Use only the required amount of water.
- Turn off taps after use.
- Repair leaking taps immediately.
- Collect rainwater whenever possible.
- Do not waste clean drinking water.
Water Purification
What is Water Purification?
Answer:
Water purification is the process of making water clean and safe for drinking and other uses. Purified water helps protect us from diseases caused by polluted water.
Think About It
Q.7) What are the causes of water pollution?
Answer:
Water pollution is caused by:
- Throwing garbage into rivers and lakes.
- Releasing sewage into water bodies.
- Industrial waste.
- Washing clothes and animals in rivers.
- Plastic waste and chemicals.
Q.8) What methods can be used to purify water?
Answer:
Water can be purified by:
- Boiling
- Filtering
- Chlorination
- Using water purifiers (RO/UV)
- Sedimentation and filtration at water treatment plants
Did You Know?
Q.9) When is Water Conservation Day celebrated in Maharashtra?
Answer:
Water Conservation Day is celebrated on 10th May in Maharashtra.
Exercise
Q.1) Give reasons.
(a) Dams are built on rivers.
Answer:
Dams are built to store water for drinking, farming, industries and generating electricity.
(b) Water had to be supplied to Latur city by train.
Answer:
Latur faced a severe water shortage due to drought, so drinking water had to be supplied by trains.
(c) Chhatrapati Shivaji Maharaj made arrangements for water at Raigad.
Answer:
He made water arrangements to ensure that people and soldiers at Raigad Fort had enough water throughout the year.
(d) Dr. Rajendra Singh built Johads.
Answer:
Rajendra Singh built Johads (small earthen dams) to store rainwater and solve the problem of water scarcity in Rajasthan.
Q.2) Answer the following questions in two or three sentences.
(a) The water in your area has become polluted. Discuss with your parents and write the solutions.
Answer:
To reduce water pollution:
- Do not throw garbage into rivers and lakes.
- Treat sewage before releasing it.
- Avoid using harmful chemicals near water bodies.
- Keep water sources clean.
- Spread awareness about saving water.
(b) Why is Dr. Rajendra Singh called the “Waterman of India”?
Answer:
Dr. Rajendra Singh is called the “Waterman of India” because he built Johads (small earthen dams) to store rainwater. His work increased groundwater levels and turned many dry areas into green and fertile land.
Q.3) Observe the picture and answer the following questions.
(a) According to the information on the bottle, how much water does it hold?
Answer:
1 Litre (1 L)
(b) What is the price of the bottle?
Answer:
โน14
Q.4) Groundwater Conservation
Answer the following questions.
(a) Where does rainwater fall?
Answer:
Rainwater falls on:
- Roofs of houses
- Building terraces
- Hilltops
- Ground
(b) What helps to increase the groundwater level?
Answer:
Collecting rainwater in storage tanks and allowing it to seep into the ground through soak pits helps increase the groundwater level.
(c) What is done to allow rainwater to seep into the ground?
Answer:
Rainwater is allowed to seep into the ground through soak pits and rainwater harvesting systems.
(d) Write any two slogans based on this lesson.
Answer:
- Save Water, Save Life.
- Every Drop Counts.
Activities
Q.1) Find information about the work done by Dr. Babasaheb Ambedkar regarding water issues.
Answer:
B. R. Ambedkar fought for equal rights to use public water sources. He led the Mahad Satyagraha at Chavdar Tank in 1927 to ensure equal access to water for everyone.
Q.2) Write the benefits of ‘Jalyukt Shivar Abhiyan’ and ‘Har Ghar Jal’.
Answer:
Jalyukt Shivar Abhiyan
- Conserves rainwater.
- Recharges groundwater.
- Makes villages drought-free.
Har Ghar Jal
- Provides tap water connections to rural homes.
- Ensures safe drinking water.
- Improves health and hygiene.
Q.3) How is rainfall measured?
Answer:
Rainfall is measured using a Rain Gauge. It measures the amount of rainfall in millimetres (mm).
Q.4) Collect pictures of dams in Maharashtra.
Answer:
Examples of dams in Maharashtra:
- Jayakwadi Dam
- Koyna Dam
- Bhatsa Dam
- Ujjani Dam
- Mulshi Dam
Key Points to Remember
- Water is essential for all living beings.
- Save every drop of water.
- Harvest rainwater whenever possible.
- Prevent water pollution.
- Reuse water whenever it is safe to do so.
- Repair leaking taps immediately.
- Keep rivers, lakes and ponds clean.
- Water conservation is everyone’s responsibility.