Chapter 6: Every drop is precious | Class 5 | EVS | Textbook solutions

I. Conceptual Understanding

Questions and answers

1. What are the uses of rivers?

Rivers are very important for many reasons:

• We use river water for drinking and cooking.

• Farmers use river water to water their crops.

• Rivers provide fish, which we can eat.

• Boats can travel on rivers to carry people and goods.

• Rivers help make electricity when we build dams on them.

2. What are the tributaries of river Krishna?

Tributaries are smaller rivers that flow into a bigger one. The main tributaries of the Krishna River are:

Bhima, Gayatri, Ghataprabha, Koyna, Malaprabha, Munneru, Nira, Palem, Panchaganga, Tungabhadra, Vemana, Wyra rivers are the tributaries of Krishnariver.These small rivers add more water to the Krishna River and make it larger.

3. Write a brief note on water pollution.

Water pollution happens when harmful things like garbage, chemicals, or sewage get into water bodies like rivers, lakes, and oceans. This makes the water dirty and dangerous. Polluted water:

• Can make people sick if they drink or use it.

• Hurts animals and fish that live in the water.

• Damages plants growing near the water.

It’s very important to keep water clean to protect nature and ourselves!

II. Questioning and Hypothesis

4. What are the reasons for drying up of rivers?

Rivers can dry up because of

• Less rain: When there is not enough rain, rivers don’t get enough water to stay full

.• Using too much water: If people take too much water from rivers for drinking, farming, or factories, the river can lose water.

• Cutting down trees: Trees help bring water to rivers. When too many trees are cut down, rivers get less water.

• Pollution: Pollution from waste and chemicals can harm the river and reduce its water flow.

• Hot weather or climate change: Very hot weather or changes in the climate can make the water in rivers dry up faster.It’s important to take care of rivers so they don’t dry up!

III. Experiment:

5. Collect samples of water from different water resources and discuss which water is suitable for drinking.

Materials Needed:

• Clean bottles or containers for collecting water.

• Samples of water from different sources like:

• A river or pond

• Tap water

• Filtered water (from a water filter)

• Rainwater

• A magnifying glass (if available)

• Clean, white paper or a clear glass to observe the water.

Steps:

1. Collect the water samples:

• Take small amounts of water from different sources (tap water, river water, rainwater, and filtered water).

• Label each container to remember where the water came from.

2. Observe the water:

• Look at each sample carefully. You can pour a little bit of the water onto a clean white paper or into a glass.

• Check if the water is clear or if there are any tiny particles, dirt, or colors in it.

• Use a magnifying glass to look closely for small things you can’t see with your eyes.

3. Smell the water:

• Gently smell each sample. Clean water should not have a bad or strange smell.

4. Discussion:

• Tap water and filtered water are usually clear and clean, so they are safe for drinking.

• River water and pond water might look dirty, have particles, or smell bad. This is not good for drinking unless it’s cleaned and filtered.

• Rainwater may look clean, but sometimes it collects dust and dirt as it falls, so it also needs to be filtered.

Conclusion:

• Discuss with the students which water looks the cleanest and safest for drinking (usually filtered or tap water).

• Explain that even though some water looks clean, it’s always best to filter it or boil it before drinking to remove any germs.

This simple activity will help students understand how to observe water quality and learn which types are safe for drinking!

IV. Information skills and Project work

6. Project: Collecting Information About Droughts and Floods

Steps for Students:

1. Prepare Questions:

• Have you ever experienced a drought or flood?

• How did it affect your family and your home?

• Did you face any problems like lack of water or food during the drought/flood?

• How did your school or work get affected?

• What did people in your village or town do to manage during the drought/flood?

• How did things get better afterward?

2. Talk to People:

• Ask students to talk to their parents, grandparents, or neighbors who might have experienced a drought or flood. They can also ask their teachers or elders in their community.

• Students should take notes or remember the important points from what they learned.

3. Record the Answers:

• “During the flood, our house was filled with water, and we had to stay at a relative’s place.”

• “In the drought, we had very little water to drink, and our crops dried up.”

4. Discuss in Class:

• After collecting the information, students can share what they learned with their classmates.

• The teacher can help them understand how people struggle during these times and how communities work together to recover.

Conclusion:

• Through this project, students will learn how natural disasters like droughts and floods affect people’s lives. It will help them understand the importance of helping others during such times and being prepared.

V. Drawing pictures and Model Making

7. Make a poster on how to “Save water” and display in your class.

VI. Appreciation

8. Write slogans on controlling the pollution of rivers.

Here are some impactful slogans for controlling river pollution:

1. “Keep Our Rivers Clean, Keep Our Future Green!”

2. “Rivers are Life – Let’s Keep Them Pure and Free of Strife!”

3. “Don’t Pollute, It’s Our Duty to Contribute!”

4. “Clean Rivers, Healthy Lives – Protect Our Water to Survive!”

5. “Save Water, Save Rivers – Act Now for Our Future Givers!”

6. “Don’t Let Our Rivers Drown in Waste – Act Fast, Don’t Delay!”

7. “Say No to Pollution, Yes to a Clean Solution!”

8. “Pollute a River, Pollute Life – Keep Water Free of Strife!”

9. “Let’s Heal Our Rivers, Drop by Drop!”

10. “A Clean River is a Gift to All – Protect It, Big or Small!”