CBSE Class 4 EVS Looking Around Chapter 18: Too Much Water, Too Little Water - NCERT Solutions

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NCERT Solutions PDF Class 4 PDF

This chapter, 'Too Much Water, Too Little Water,' from the CBSE Class 4 EVS curriculum, delves into critical aspects of water, including its purity and availability. The NCERT Solutions provided here address various scenarios related to water contamination and scarcity. Students will learn about the harmful effects of drinking unclean water, potential reasons for water contamination, and methods to purify water. The solutions also touch upon personal experiences with water shortages and the importance of choosing safe drinking water over other beverages. These solutions are designed to enhance understanding of water's significance and encourage responsible water usage, aiding students in their exam preparation by clarifying concepts and providing practical insights.

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Quick info

BoardCBSE
ClassClass 4
SubjectLooking Around (EVS)
Session2026
LanguageEnglish
TypeNCERT Solutions
ChapterChapter 18

Chapter summary

Chapter 18 of the CBSE Class 4 EVS 'Looking Around' textbook focuses on the dual issues of water contamination and scarcity. The NCERT Solutions cover the health risks associated with consuming dirty water, such as diseases like cholera and typhoid. It also prompts students to reflect on the causes of water impurity in their locality and discuss personal experiences with water-related illnesses. Furthermore, the solutions explore methods for water purification and the guest's preference for water over cold drinks, highlighting the importance of safe drinking water. The chapter concludes by addressing personal experiences with water shortages.

Learning outcomes

  • Understand the health risks associated with drinking unclean water.
  • Identify potential causes of water contamination.
  • Learn about methods to purify drinking water.
  • Discuss personal experiences related to water scarcity and contamination.
  • Recognize the importance of safe drinking water.

Topics covered

Paper topics

  • Water contamination
  • Diseases from dirty water
  • Water purification methods
  • Boiling water
  • Chlorination
  • Water scarcity
  • Importance of safe drinking water
  • Health and hygiene

Important topics

  • Diseases caused by unclean water
  • Methods to purify water
  • Consequences of water scarcity
  • Importance of safe drinking water

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Questions and Solutions

Question 1

How can unclean or dirty water harm our body?
Solution: Unclean and dirty water is often contaminated with harmful micro-organisms like bacteria and viruses. When we drink this contaminated water, these harmful germs can enter our body and cause various serious diseases. Common illnesses resulting from drinking unsafe water include cholera, which causes severe diarrhoea and dehydration; diarrhoea, leading to frequent loose stools; and typhoid, a bacterial infection that causes high fever and weakness.

Question 2

Have you ever got dirty or unclean water in your area? What was the reason for this?
Solution: This question asks about your personal experiences. Think about times when the water supplied to your home or community was not clean. Common reasons for water becoming dirty include heavy rainfall washing pollutants into the water source, leakage in water pipes allowing sewage to mix with clean water, or improper disposal of waste near water bodies. If you have experienced this, describe what you observed and what you think caused it.

Question 3

Do you know anyone who has fallen sick because of such water? Talk about this.
Solution: This question encourages you to recall and discuss personal or known instances of people falling ill due to contaminated water. If you know someone who experienced sickness like diarrhoea, typhoid, or stomach problems after drinking unsafe water, you can share what happened, what illness they suffered from, and how they recovered. Discussing these experiences helps us understand the real-life impact of water contamination on health.

Question 4

When the guest came to Suguna's house, they offered him a cold drink, because they thought he should not drink such water. What do you think Suguna's family must be doing for their own drinking water?
Solution: Suguna lived in a village where the water might not always be safe to drink directly. When the guest arrived, her family offered a cold drink, perhaps because they were unsure about the safety of their regular drinking water or wanted to offer something readily available. For their own drinking water, Suguna's family likely takes precautions to ensure it is safe. Common methods include boiling the water before drinking, which kills harmful germs, or using purification tablets like chlorine tablets, which also help to clean the water and make it suitable for consumption.

Question 5

The guest said he did not take cold drinks. Why do you think he said this?
Solution: The guest likely said he did not take cold drinks because he preferred to drink plain water. This preference could be due to several reasons: he might be health-conscious and avoid sugary beverages, he might be trying to quench his thirst more effectively with water, or he might simply prefer the taste and natural refreshment of water over processed cold drinks.

Question 1

Have you ever faced a shortage of water in your house? When?
Solution: This question is about your personal experiences with water availability. Think about any time when you did not have enough water at home for daily needs like drinking, cooking, or bathing. This might happen during dry seasons, if there are problems with the water supply system, or during repairs. Describe when this shortage occurred and how it affected your household.

Common mistakes

  • Not understanding the direct link between dirty water and specific diseases.
  • Failing to consider practical water purification methods.
  • Giving generic answers without personal reflection when experience is asked.
  • Overlooking the health implications of choosing cold drinks over safe water.

Revision tips

  • Focus on the diseases caused by contaminated water and their symptoms.
  • List and explain different methods of water purification mentioned.
  • Think about personal experiences with water issues to answer related questions.
  • Understand why safe drinking water is preferred over other beverages.

Practice MCQs

Q1. What are some diseases that can be caused by drinking unclean water?

Q2. Which of the following is a method to make water safe for drinking?

Q3. Why might a guest prefer water over a cold drink?

Q4. What is a potential reason for water becoming dirty or unclean in an area?

Frequently asked questions

What are the main health risks of drinking unclean water?

Drinking unclean or dirty water can lead to serious diseases such as cholera, diarrhoea, and typhoid because it contains harmful micro-organisms.

What are some ways to make water safe for drinking?

Water can be made safe for drinking by boiling it, which kills harmful microbes, or by using purification methods like chlorination.

Why is it important to discuss water issues like contamination and scarcity?

Discussing these issues helps us understand the importance of clean water for health, learn about potential problems in our communities, and find solutions for water safety and availability.

Why did Suguna's family likely take steps to purify their water?

Suguna's family likely purified their water by boiling or chlorination to ensure it was safe and free from disease-causing microbes before drinking, especially if the local water source was suspected to be unclean.

What does the chapter suggest about guest preferences for drinks?

The chapter suggests that guests might prefer plain water over cold drinks, possibly due to health consciousness or a preference for simple, safe hydration.

Important links

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