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CBSE Class 7 Science Water: A Precious Resource Worksheets with Answers - Chapter 16 - PDF

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Worksheets in Science for Class 7

CBSE Class 7 Science Water: A Precious Resource Worksheets with Answers for Chapter 16 in PDF format to download prepared by expert Science teachers from latest edition of CBSE(NCERT) books. Register Online for NCERT Solutions Class 7 Science tuition on Vedantu to score more marks in CBSE board examination. Vedantu is a platform that provides free CBSE Solutions (NCERT) and other study materials for students. Maths Students who are looking for the better solutions ,can download Class 7 Maths NCERT Solutions to help you to revise the complete syllabus and score more marks in your examinations. 

Topics in CBSE Class 7 Science Chapter -16 Water: A Precious Resource:

The production, nature, and various phenomena of light are discussed in this chapter. This chapter is made enjoyable to study and understand using real-life examples, visuals, and activities. All topics in CBSE Class 7 Science are covered in depth to ensure that students have a thorough understanding of the subject. Concise and easy-to-understand explanations of topics and principles are provided. This answer summarises the CBSE Class 7 Science knowledge and skills as outlined in the most recent syllabus. Exercises have been properly rated to assist pupils in moving up and down each level.

S.No

Topic Name

1

How much water is available

2

Forms of water

3

Groundwater as an important source of water

4

Depletion of water table

5

Distribution of water

6

Water management

7

What role you an play

8

Effect of water scarcity on plants

Importance of CBSE Class 7 Chapter - 16 :

Water: A Precious Resource, Chapter 16 of Class 7 Science, covers everything about water. It informs students about the various types of water that exist on the planet. The abundance of water on our planet Earth is also discussed in the Water Class 7 notes. Students will learn about groundwater as well. It is, without a doubt, a vital supply of water. In the same way, students will be made aware of the underground water table's depletion. It focuses on the environmental distribution, with a particular focus on our country. It raises student awareness of their role in water conservation. Furthermore, the impact of water scarcity on plants is briefly explored in the water class 7 revision notes available on vedantu website.

How Much Water is There on the Planet?

Water covers 71% of the Earth's surface. However, living organisms are unable to consume all of this. Saline water makes up 97 percent of the earth's water, which is found in the oceans, while freshwater makes up 3% of the earth's water, which is found in ice caps, glaciers, and underground. Fresh water can be found underground, in rivers, and in lakes. Even then, only 1% of our freshwater is readily available, with the majority of it trapped in glaciers and snowfields.

Water in Its Various Forms:

  • Solid state - On the surface of the world, water occurs in the solid state as ice and snow.

  • Liquid state - Water can be found in a liquid condition in rivers, lakes, oceans, and underground.

  • Water vapour exists in the atmosphere in a gaseous state.

Water Cycle in Environment:

The Water Cycle explains how water moves through the system. The water cycle is a natural occurrence that occurs on a constant basis on our planet. The water cycle keeps the amount of water on the planet constant. Evaporation, condensation, precipitation, and water collecting are the four steps of the process.

What is the Definition of Groundwater?

Groundwater is the water that is present underneath a location's water table. This water collects inside the soil due to a variety of factors: 

  • Rainwater that pours on the land penetrates into the earth. 

  • Water from rivers, lakes, and ponds frequently seeps into the ground, accumulating as groundwater.

Infiltration is the process through which water collects in the ground by travelling through the pores of the soil. Aquifer - An aquifer is an underground layer of rocks that contains water between fissures and empty places.

Groundwater Level Depletion: 

If humans continue to take out more water than is replaced by rainfall, the water table of a location may be depleted. Water table depletion can be caused by a number of factors, including:

  • Increased Population - As the population of a region grows, so does the need for freshwater. This necessitates the use of additional water. In addition, a growing population necessitates the development of new dwellings, businesses, factories, buildings, and roadways.

  • Many other factors contribute to water table depletion, including increased industries, agricultural activities, deforestation, and low rainfall.

Water Distribution:

Different elements such as rainfall and climatic conditions have little effect on the distribution of water across the globe. Some areas have a lot of water, while others have a lot of water scarcity.

Water Management:

Rainwater is normally allowed to flow away when it falls on the earth. It can, however, be conserved and utilised to restore the Earth's groundwater levels. Rainfall harvesting is the technique of keeping rainwater from flowing away and storing it for various uses such as refilling groundwater levels, home tasks, or industrial applications.

FAQs on CBSE Class 7 Science Water: A Precious Resource Worksheets with Answers - Chapter 16 - PDF

1. Can water scarcity affect plants? Kindly provide a detailed answer.

The plants become parched as a result of the lack of water, and they may die as a result.

  • They are unable to create food because there is no water to undergo photosynthesis.

  • Due to a lack of water, they will be unable to grow erect.

  • Due to a lack of water, they will no longer be able to acquire enough nutrients from the soil.

  • As a result, without plants, there will be no food, no oxygen, and thus no life.

2. Explain the uses of groundwater.

Wells, hand pumps, and electric pumps are commonly used to extract groundwater. Water that falls on the earth's surface seeps into the earth's interior, accumulating in the fissures and spaces between the rocks. The upper limit of the water layer beneath the soil is referred to as the water table. The water table might differ from one location to the next. Because groundwater contains freshwater, it can be used for a variety of functions, including drinking water, household chores, crop irrigation, water services in public buildings and offices, firefighting, and industrial applications.

3. Should I by heart all the answers from the sample papers provided by Vedantu?

Memorizing all the answers is not a required option. Memorising answers increases your chances of failing the exam. Try these tips instead. Practice utilising the formulas you've just learned to help you remember them. Try to complete the tasks on the same day as your lecture so that the information is fresh in your mind. When you have free time, put your knowledge to the test. After that, write the essential points and thoughts and connect them with lines to the topic. Look through your notes and highlight the formulas and concepts you'll need to remember. For more tips and guidance visit Vedantu official website.

4. Why should I use the materials provided by Vedantu?

Vedantu is developed to make it easy for students to meet all of their educational needs with absolutely no cost. With our user-friendly tools, you may effortlessly improve your academic growth. Each chapter is covered in detail in our movies, which are both entertaining and educational. Furthermore, the solutions have been created with an examination in mind so that students can achieve good results. The sample papers are intended to aid students in fully comprehending the test pattern and marking methodology for each chapter.

5. Provide the answer to this question- write some measures for water conservation.

We Can Use a Variety of Strategies to Reduce Water Waste:

  • When brushing or washing your face, keep the taps closed to avoid water from flowing away unnecessarily. Any leaking water taps should be repaired right away.

  • Instead of taking a shower, take a bath in a bucket. Instead of running water, use the water leftover from washing clothes to mop the floor and wash automobiles. 

  • Do not throw away food since irrigating fruits and vegetables requires a lot of water.