Too Much Water Too Little Water Class 4 NCERT EVS

Chapter Overview: Water in the Right Amount

Water is needed for drinking, cooking, bathing, washing, farming, cleaning and keeping animals alive. But this chapter teaches an important idea: only having water is not enough; we need safe water in the right amount. Too much water can fill streets, enter houses, damage crops, make wells dirty and spread diseases. Too little water can make people stand in long queues, stop plants from growing and force families to use water carefully. In EVS, we do not just memorize words like flood or drought. We observe how water affects health, work, school, food and the lives of people around us.

Important Words to Know

Flood

A flood happens when too much water collects in an area, often after heavy rain or overflowing rivers. It can damage houses, roads, crops and drinking water sources.

Drought

A drought is a long period with very little rain. Wells, ponds and taps may dry up, and people, animals and plants suffer because of water shortage.

Clean drinking water

Water that is safe to drink and does not contain dirt, germs or harmful waste. Boiling, filtering or using safe water sources can help.

Water conservation

Using water carefully and avoiding wastage. Closing taps, reusing water for plants and fixing leaks are simple examples.

How to Think About a Water Problem

1. Step 1: Notice the amount of water — Ask: Is there too much water, too little water, or enough water? For example, water on roads after heavy rain shows too much water, while dry taps show too little water.
2. Step 2: Check if the water is clean — Even if water is available, it may not be safe. Flood water can mix with drains and make wells or hand pumps dirty. Such water should not be drunk without cleaning.
3. Step 3: Think about who is affected — People may miss school or work, farmers may lose crops, and animals may not get drinking water or fodder. EVS answers should mention these effects clearly.
4. Step 4: Suggest a useful action — For too little water, save and reuse water. For dirty water, boil or filter it. For floods, move to safer places and avoid walking through unknown water.

Worked Examples from Daily Life

• Example 1: A village pond dries up in summer.
  Step 1: Identify the problem: this is too little water.
  Step 2: Think of effects: animals may not get water, people may walk far, and plants may dry.
  Step 3: Suggest actions: store rainwater, do not waste water, and use buckets instead of running taps.
  Final answer: The village is facing water shortage, so people should save water and use safe stored water carefully.

• Example 2: After heavy rain, water enters houses and the hand pump water becomes muddy.
  Step 1: Identify the problem: this is too much water, or a flood-like situation.
  Step 2: Think of danger: muddy water may contain germs and can cause stomach illness.
  Step 3: Suggest action: drink boiled or filtered water and keep food covered.
  Final answer: Heavy rain has made water unsafe, so people should avoid drinking muddy water and make it safe first.

Common Mistakes to Avoid

• Do not write that all flood water is useful because it is water. Flood water can be dirty and dangerous.
• Do not confuse drought with summer. Drought means a long shortage of rain and water, not just a hot day.
• In answers, always connect water problems to people, animals, plants and health. This makes your EVS answer complete.
• Do not waste clean water while washing hands, brushing teeth or cleaning utensils. Small habits matter.
• If a question asks for safety, mention clean drinking water, covered food and avoiding dirty water.

CBSE Answer Writing Tip

For Class 4 EVS, write answers in simple cause-and-effect sentences. Example: Heavy rain can cause floods. Flood water may mix with drains and make drinking water dirty. So, we should drink boiled or filtered water. This kind of answer shows that you understand the lesson, not just remember a word. If the question asks what we can do, include one action at home, such as closing taps, and one action in the community, such as storing rainwater or keeping wells clean.

Practice Questions with Solutions

• Q: What problems can happen when there is too much water after heavy rain?
  A: Step 1: Too much rain can fill roads, fields and houses with water.
  Step 2: This water can damage crops, stop people from travelling and make drinking water dirty.
  Step 3: Dirty water may spread diseases if people drink it without cleaning.
  Final answer: Too much water can cause floods, damage homes and crops, and make water unsafe for drinking.

• Q: Why is too little water a serious problem for a family?
  A: Step 1: A family needs water for drinking, cooking, washing and cleaning.
  Step 2: If water is less, people may have to stand in long queues or walk far to bring water.
  Step 3: They may not be able to bathe, wash clothes or water plants properly.
  Final answer: Too little water makes daily life difficult because water is needed for many basic activities.

• Q: Rani sees her brother leaving the tap open while brushing. What should she tell him?
  A: Step 1: Rani should notice that clean water is being wasted.
  Step 2: She should explain that many people do not get enough water every day.
  Step 3: She should ask him to close the tap while brushing and open it only when needed.
  Final answer: Rani should tell him to close the tap because saving water helps everyone.

• Q: A hand pump gives muddy water after a flood. Is it safe to drink? What should people do?
  A: Step 1: Muddy water may contain dirt and germs.
  Step 2: Drinking such water can make people sick.
  Step 3: People should boil, filter or use safe water from a trusted source before drinking.
  Final answer: No, muddy water is not safe to drink; it should be cleaned or made safe first.

Frequently Asked Questions