Dav Class 4 Science Chapter 8 Question Answer

DAV Class 4 Science Chapter 8 Question Answer Water Scarcity and Conservation of Water are prepared by science subject experts. With the help of these solutions for Class 4 Science My Living World Book, you can easily grasp basic concepts better and faster.

Here at SOLUTIONGYAN, chapter 8 Water Scarcity and Conservation of Water of class 4 Science book exercise provided at the end of the chapter will be a useful resource for DAV Class 4 students.

Here, we provide complete solutions of DAV Class 4 Science Chapter 8 Water Scarcity and Conservation of Water of My Living World Textbook. These exercise of science chapter 8 contains 5 questions and the answers to them are provided in the DAV Class 4 Science Chapter 8 Question Answer Water Scarcity and Conservation of Water.

DAV Class 4 Science Chapter 8 Water Scarcity and Conservation of Water Solutions

DAV Class 4 Science Chapter 8 Water Scarcity and Conservation of Water Solutions is given below. Here DAV Class 4 Science chapter 8 question answer is provided with detailed explanation.

Highlights

• Fill in the blanks
• Match the following
• Tick the correct option
• Answer the following questions in brief
• Answer the following questions

DAV Class 4 students are more likely to score good marks in Science exam if they practise DAV Class 4 Science Chapter 8 Question Answer Water Scarcity and Conservation of Water regularly.

DAV Class 4 Science Chapter 8 Question Answer

A. Fill in the blanks.

1. The earth is known as a ___________ planet.

2. ___________ and ___________ are two major natural sources of water.

3. Setting-up of factories cause a ___________ in the level of underground water.

4. Cutting of trees in the forests causes a ___________ in rainfall.

5. Use of water sprinkler for irrigation reduces the ___________ of water.

Answer: (1) blue (2) Rain, snow (3) decrease (4) decrease (5) wastage

B. Match the following:

Answer: (1) c (2) d (3) a (4) b

C. Tick the correct option.

1. Two major natural sources of water are-

Answer: rain and snow

2. Planting of more trees will help in-

Answer: increasing the rainfall

3. We can avoid wastage of water by-

Answer: using water sprinkler for irrigation

D. Answer the following questions in brief.

1. How much of the surface of earth is covered by water?

Answer: three-fourth

2. Name three sources of fresh water.

Answer: three sources of fresh water are:

• Rivers
• Lakes
• Streams

3. State the effect of deforestation on rainfall.

Answer: Deforestation decreases the rainfall.

4. State two reasons that are leading to clearing of forests.

Answer: Two reasons that are leading to clearing of forests are:

• Settings – up of factories and,
• For building houses

5. State one utility of dams.

Answer: It stores large quantity of water.

E. Answer the following questions.

1. State three factors that are responsible for water scarcity.

Answer: Three factors that are responsible for water scarcity are:

• Population
• Deforestation
• Setting up of factories

2. How does setting-up of factories affect the ground water level?

Answer: Factories need a large quantity of water. They fulfill this need by using underground water. Hence setting up of factories affect the ground water level.

3. State two ways to do rain-water harvesting.

Answer: Two ways to do rain-water harvesting:

• Rain water should be collected in large underground tanks from where it seeps slowly into the ground.
• Rain water may also be collected in overhead tanks and used for daily needs.

4. How should the fields be irrigated to reduce wastage of water?

Answer: Fields should be irrigated by using water sprinkler to reduce the wastage of water.

5. State any three ways of conserving water at home.

Answer: Three ways of conserving water at home are:

• Turn off the tap after using it.
• Use a mug and bucket to take bath instead of a shower.
• Water the plants with a bucket and mug instead of a pipe.