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Cbse, ncert and icse solution online, class 8 science case study question, case study question class 8 science (cbse / ncert board).

Class 8 Science Case Study Question and Answer: CBSE / NCERT Board Class 8 Science Case Study Question prepared by expert Science Teacher. Students can learn Case Based Question / Paragraph Type Question for NCERT Class 8 Science.

There are total 18 chapter Crop Production and Management, Microorganisms: Friend and Foe

, Synthetic Fibres and Plastics, Materials: Metals and Non-Metals, Coal and Petroleum, Combustion and Flame, Conservation of Plants and Animals, Cell – Structure and Functions, Reproduction in Animals, Reaching the Age of Adolescence, Force and Pressure, Friction, Sound, Chemical Effects of Electric Current, Some Natural Phenomena, Light, Stars and the Solar System, Pollution of Air and Water

For any problem during learning any Case or any doubts please comment us. We are always ready to help You.

CBSE Class 8 Science Case Study Question

  • Chapter 1 Crop Production and Management Case Study Question
  • Chapter 2 Microorganisms: Friend and Foe Case Study Question
  • Chapter 3 Synthetic Fibres and Plastics Case Study Question
  • Chapter 4 Materials: Metals and Non-Metals Case Study Question
  • Chapter 5 Coal and Petroleum Case Study Question
  • Chapter 6 Combustion and Flame Case Study Question
  • Chapter 7 Conservation of Plants and Animals Case Study Question
  • Chapter 8 Cell – Structure and Functions Case Study Question
  • Chapter 9 Reproduction in Animals Case Study Question
  • Chapter 10 Reaching the Age of Adolescence Case Study Question
  • Chapter 11 Force and Pressure Case Study Question
  • Chapter 12 Friction Case Study Question
  • Chapter 13 Sound Case Study Question
  • Chapter 14 Chemical Effects of Electric Current Case Study Question
  • Chapter 15 Some Natural Phenomena Case Study Question
  • Chapter 16 Light Case Study Question
  • Chapter 17 Stars and the Solar System Case Study Question
  • Chapter 18 Pollution of Air and Water Case Study Question

What is Case Study Question?

Ans. At case Study there will one paragraph and on the basis of that concept some question will made. Students have to solve that question.

How many marks will have at case based question?

Most of time 5 questions will made from each case. There will 1 or 2 marks for each question.

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case study questions grade 8 science

CBSE 8th Standard CBSE all question papers, important notes , study materials , Previuous Year questions, Syllabus and exam patterns. Free 8th Standard CBSE all books and syllabus online. Practice Online test for free in QB365 Study Material. Important keywords, Case Study Questions and Solutions. Updates about latest education news and Scholorships in one place.

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CBSE Important Questions for Class 8 Science

CBSE Important Questions for Class 8 Science help students face the exams confidently. As the exam nears, they should complete the syllabus and start with the revision. The CBSE Important Questions for Class 8 Science will help them revise the subject quickly. Here, we have compiled the important questions for all the chapters of the CBSE Class 8 Science subject. By solving them, students will understand the types of questions asked in the exam. All types of questions are provided for students’ practice from basic to high level. CBSE Class 8 Science is a fascinating subject and includes interesting topics, thus providing basic knowledge about light, current, force, human beings, etc. Solving these CBSE Class 8 Science Important Questions is the best way to revise the major concepts of the subject.

The subject experts created the questions based exclusively from the exam perspective. Students must start solving them at least 20 days before the annual exam. By doing so, they will be able to analyse their weak areas and work on them. Practising the CBSE Important Questions will improve their performance and overall score in CBSE Class 8 Science exam.

There is a total of 18 chapters in NCERT Class 8 Science book. In the table below, we have provided the Important Questions for CBSE Class 8 Science for all the chapters. We have also included all types of questions, i.e. very short, short and long answers. These questions will cover all the crucial topics and the CBSE Class 8 Science syllabus.

How to Practise the CBSE Class 8 Science Important Questions

  • Practise the question of a particular chapter in one go.
  • Refrain from looking for the answer while solving the questions.
  • Allocate a time duration for solving the questions and try to finish it accordingly.
  • After completing all the questions, do a self-evaluation.
  • Go through those questions again that could not be solved.

We, at BYJU’S, also provide other study materials such as CBSE Class 8 Science sample papers , notes, exemplars, solutions, etc.

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  • Friction Class 8 Case Study Questions Science Chapter 9

Last Updated on May 16, 2024 by XAM CONTENT

Hello students, we are providing case study questions for class 8 science. Case study questions are the new question format that is introduced in CBSE board. The resources for case study questions are very less. So, to help students we have created chapterwise case study questions for class 8 science. In this article, you will find case study questions for cbse class 8 science chapter 9 Friction.

Friction
Case Study Questions
Competency Based Questions
CBSE
8
Science
Class 8 Studying Students
Yes
Mentioned

Table of Contents

Case Study Questions on Friction

Question 1:

Read the given passage below and answer the question:

(I) The force required to overcome friction at the instant an object starts moving from rest is a measure of static friction. On the other hand, the force required to keep the object moving with the same speed is a measure of sliding friction. The sliding friction is slightly smaller than the static friction. When one body rolls over the surface of another body, the resistance to its motion is called rolling friction. Rolling reduces friction. It is always easier to roll than to slide a body over another.

Q.1. The following options show arrangement of types of friction according to decreasing order of applied friction. Select the correct order. (a) Rolling > Sliding > Static (b) Static > Rolling > Sliding (c) Sliding > Static > Rolling (d) Static > Sliding > Rolling

Difficulty Level: Easy

Ans. Option (d) is correct. Explanation: Rolling friction is least among all three types because the surface of wheels has minimal contact with the surface on which it rolls, thus minimising friction.

Q.2. In which of the following case one will have to apply maximum force? (a) Riding a bicycle (b) Trying to move a heavy rock from its resting place (c) Swimming in a pool (d) Drilling a hole in a wall

Ans. Option (b) is correct. Explanation: Stationary rock will experience static friction. Static friction is the highest; thus it will require maximum force or efforts to move it from its rest position.

Q.3. Oiling or greasing in machine parts: (a) Increases the friction between the parts (b) Decreases the friction between the parts (c) Both (a) and (b) are correct. (d) None of the above

Ans. Option (b) is correct.

Explanation: Oiling and greasing act as a lubricant. When oil, grease or graphite is applied between the moving part of a machine, a thin layer is formed there and moving surfaces do not directly rub against each other. Interlocking of irregularities is avoided to a great extent. Movement becomes smooth.

Q.4. Why static friction is more than sliding friction?

Ans. The friction is caused by the interlocking of irregularities in the two surfaces. It is obvious that the force of friction will increase if the two surfaces are pressed harder. The force required to overcome friction at the instant an object starts moving from rest is a measure of static friction. On the other hand, the force required to keep the object moving with the same speed is a measure of sliding friction. When the box starts sliding, the contact points on its surface, do not get enough time to lock into the contact points on the floor. So, the sliding friction is slightly smaller than the static friction.

Q.5. Classify the given examples into static, sliding and rolling friction Papers on a table, a box sliding on an inclined plain, car parked on a hill, ball moving on the ground, child playing on slide in a park, tyres of a bus.

Ans. Static Friction: Papers on a table, car parked on a hill. Sliding Friction: A box sliding on an inclined plain, child playing on slide in a park Rolling Friction: Ball moving on the ground, tyres of a bus.

  • Sound Class 8 Case Study Questions Science Chapter 10
  • Force and Pressure Class 8 Case Study Questions Science Chapter 8
  • Reaching the Age of Adolescence Class 8 Case Study Questions Science Chapter 7
  • Reproduction in Animals Class 8 Case Study Questions Science Chapter 6
  • Conservation of Plants and Animals Class 8 Case Study Questions Science Chapter 5
  • Combustion and Flame Class 8 Case Study Questions Science Chapter 4
  • Coal and Petroleum Class 8 Case Study Questions Science Chapter 3

Microorganisms: Friend and Foe Class 8 Case Study Questions Science Chapter 2

Crop production and management class 8 case study questions science chapter 1, topics from which case study questions may be asked.

  • Learn the concept of friction.
  • Understand the factors that affect frictional force.
  • Learn the different types of friction.
  • Understand the advantages and disadvantages of friction.
  • Learn the methods to increase or decrease friction.
  • Understand the concept of fluid friction and methods to reduce it.

The force which opposes the relative motion between two surfaces in contact is called friction. Friction is a necessary evil that makes us walk, write, hold things, etc. The liquids and gases also exert opposition forces on objects moving through them. This is called fluid friction.

Frequently Asked Questions (FAQs) on Friction Case Study Questions

Q1: what are case study questions for cbse examinations.

A1: Case study questions in CBSE examinations typically involve scenarios or real-life examples, requiring students to apply their understanding of concepts to solve problems or analyze situations.

Q2: Why are case study questions important for understanding class 8 science chapters?

A2: Case study questions provide a practical context for students to apply theoretical knowledge to real-world situations, fostering deeper understanding and critical thinking skills.

Q3: How should students approach answering case study questions for CBSE?

A3: Students should carefully read the case study, identify the key issues or problems presented, analyze the information provided, apply relevant concepts and principles of friction, and formulate well-supported solutions or responses.

Q4: Are there any resources available online for students to practice case study questions on class 8 science chapters for CBSE exams?

A4: Yes, several educational websites offer case study questions for CBSE students preparing for science examinations. We also offer a collection of case study questions for all classes and subject on our website. Visit our  website  to access these questions and enhance your learning experience.

Q5: How can students effectively prepare for case study questions on friction for CBSE exams?

A5: Effective preparation strategies include regular revision of concepts, solving practice questions, analyzing case studies from previous exams, seeking clarification on doubts, and consulting with teachers or peers for guidance and support.

Q6: How can teachers incorporate case study questions on friction class 8 science into classroom teaching?

A6: Teachers can integrate case studies into lesson plans, group discussions, or interactive activities to engage students in active learning, promote problem-solving skills, and facilitate a deeper understanding of concepts of friction.

Q7: Why soles of the rubber slippers become slippery after prolonged use?

A7: While walking the slipper’s sole and ground surface experiences friction which causes the sole to wear off.

Q8: What are lubricants? How do they work? Give two examples.

A8: The substances which reduce friction are called lubricants. Example Oil, grease, graphite etc. They work by forming a thin layer between machine parts. As a result, the moving surfaces do not directly rub against each other. Interlocking of irregularities is avoided to a great extent. Movement becomes smooth.

Q9: Will the force of friction come into play, when a rain drop rolls down a glass window pane?

A9: Yes, friction comes into play when two surfaces are in contact, e.g., glass and water in this case.

Q10: While playing tug of war, Preeti felt that the rope was slipping through her hands. Suggest a way out for her to prevent this.

A10: To prevent slipping the rope from her hands, Preeti has to make her hands somewhat non-smooth, so she can rub her hands by introducing the sand between them.

Friction Class 8 Case Study Questions Science Chapter 9

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Class 8 Science Question Papers, Revision Notes, Tests

Access the best content for Class 8 Science on myCBSEguide. Get Science Revision Notes, NCERT Solutions, Sample Question papers, CBQs, Learning Videos, and tests to improve your performance.

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The main purpose of including the subject of science in upper primary or middle school is to develop rational thinking in young learners. With this objective, the CBSE curriculum has been designed to foster the learning of science at this stage. Class 8 is the edge where the upper primary level enters the stage of secondary-level education. Therefore, the complexity needs to be handled accordingly. For hassle-free preparation for Class 8 Science, you can trust the resources of myCBSEguide .

Study Material for CBSE Class 8 Science

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CBSE Class 8 Science Syllabus & Textbook

The first and foremost step in preparing for any subject is to know its syllabus well. Here you get the detailed syllabus for class 8 Science. This will help you to do away with your doubts about the syllabus if any. Along with the syllabus, you get the PDF of the NCERT textbook of Class 8 Science.

Science is an important subject for not one but many reasons. It has academic value as well as plays a major role in developing well-defined abilities in all domains among young learners.

Class 8 Science Chapter-wise Revision Notes

The resources provided by myCBSEguide are verified and assure you to get satisfactory results and if used smartly you can also be among the top scorers. Revision notes provide the chapter summary and come in handy during examination times. To get CBSE Class 8 Science Revision Notes check out this link. Links to a few chapters have been given below.

Chapter Wise Quick Revision Notes for Class 8 Science

· Crop Production and Management class 8 Notes Science

· Microorganisms class 8 Notes Science

· Synthetic Fibres and Plastics class 8 Notes Science

· Materials: Metals and Non-Metals class 8 Notes Science

· Coal and Petroleum class 8 Notes Science

· Combustion and Flame class 8 Notes Science

· Conservation of Plants and Animals class 8 Notes Science

· Cell-Structure and Functions class 8 Notes Science

· Reproduction in Animals class 8 Notes Science

CBSE Class 8 Science Model Test Papers and Online Tests

Learning without applying is of no use as everything gets registered in the subconscious mind. Hence, testing what has been learned is the best exercise to keep the acquired knowledge fresh and updated. On myCBSEguide you can get the multiple test papers for class 8 Science which can be practiced as per the requirement. We also have a facility for Class 8 Science online tests which is best suitable for the objective type of questions.

Since CBSE does not issue any sample papers for Class 8, we take efforts to assemble the final term question paper for Class 8 Science from different renowned schools. Having analyzed these papers, we prepare sample papers for class 8 Science. Although these model question papers for class 8 science may not match the same blueprint of a particular school exam, these are enough to prepare and secure a higher grade.

CBSE Class 8 Science NCERT Solutions

The CBSE Revision Notes for class 8 Science are available in PDF format and can be downloaded from our site absolutely free. In fact, teachers can use these NCERT questions to generate question papers .

Links to various NCERT solutions for Class 8 Science have been given below:

01 Crop Production and Management

02 Microoraganisms Friends and Foe

03 Synthetic Fibres and Plastics

04 Materials Metals and Non Metals

05 Coal and Petroleum

06 Combustion and Flame

07 Conservation of Plants and Animals

To download other chapters, check NCERT Solutions for Class 8 Science . Apart from the resources mentioned above, we have many more things to offer. You can also download CBSE Class 8 Science Worksheets. Students can take the help of Learning Videos for class 8 Science for a better understanding of the chapters.

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Class 8 Science includes impelling chapters which enable the young mind to ponder over everyday phenomena that they encounter in their daily life. To get study material related to Class 8 Science, the myCBSEguide app is highly recommended for the fact that it has been in the guiding light for more than ten years.

  • NCERT Solutions for Class 08

NCERT books are recommended by most of the state boards and CBSE, New Delhi. Class 8 NCERT textbooks are available for all the major subjects like Maths, Science, Social Science, English and Hindi. We at myCBSEguide offer the best quality NCERT textbook solutions for class 8 in all the subjects. …

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CBSE Class 8 Science Revision Notes

CBSE Class 8 Science Revision Notes in PDF are available for free download in myCBSEguide mobile app. The best app for CBSE students now provides source 8 Notes latest chapter wise notes for quick preparation of CBSE exams and school-based annual examinations. Class 8 Science Revision notes are also available …

NCERT solutions for Class 8 Science

NCERT Solutions for Class 8 Science includes all the questions provided in NCERT Books for 8th Class Science Subject. Here all questions are solved with detailed explanation and available for free to check mycbseguide.com. Book: National Council of Educational Research and Training (NCERT) Class: 8th Class Subject:  Science NCERT solutions …

NCERT Solutions for Class 8 Science Microoraganisms Friends and Foe

NCERT Solutions for Class 8 Science Microoraganisms Friends and Foe Class 8 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are …

NCERT Solutions for Class 8 Science Cell Structure and Functions

NCERT Solutions for Class 8 Science Cell Structure and Functions Class 8 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are …

NCERT Solutions for Class 8 Science Reproduction in Animals

NCERT Solutions for Class 8 Science Reproduction in Animals Class 8 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked …

NCERT Solutions for Class 8 Science Force and Pressure

NCERT Solutions for Class 8 Science Force and Pressure Class 8 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked …

NCERT Solutions for Class 8 Science Friction

NCERT Solutions for Class 8 Science Friction Class 8 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT …

NCERT Solutions for Class 8 Science Sound

NCERT Solutions for Class 8 Science Sound Class 8 Science book solutions are available in PDF format for free download. These ncert book chapter wise questions and answers are very helpful for CBSE exam. CBSE recommends NCERT books and most of the questions in CBSE exam are asked from NCERT …

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Class 8 Science Important Questions with Answers

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CBSE Class 8 Science Chapter wise Important Questions - Free PDF Download

Class 8 Science is a very crucial subject that needs proper attention from the students. Preparing all the chapters in this subject will help students to boost their overall scores in the exams. This is where students will need the assistance of Class 8 Science Important Questions with Answers PDF for all chapters. Apart from the exercises, these important questions can boost the preparation of the students. The experts have solved all these questions to assist in preparing this subject properly.

If you are currently studying in Class 8 , consider it one of your school life milestones as you start entering into in-depth studies related to Science. You need to solve Class 8 Science’s important questions apart from studying the Science book in such a scenario. You can expect your syllabus to comprise different aspects of scientific studies. The question papers with the solution can be the best support for those who are weak in Science or fear facing the challenge of learning complicated concepts of higher-level Science. The NCERT Class 8 Science important questions and their CBSE solutions can act as the students’ study materials.

You can also download NCERT Solution for Class 8 Science and Class 8 Maths to help you to revise complete syllabus and score more marks in your examinations.

Note: ➤ Predict your NEET rank effortlessly with our NEET Rank Predictor 2024 !

Download CBSE Class 8 Science Important Questions with Answers 2024-25 PDF

Also, check CBSE Class 8 Science Important Questions for chapter-wise PDF for other chapters:

CBSE Class 8 Science Important Questions with Answer PDF

Chapterwise Important Questions for CBSE Class 8 Science

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Class 8 Science: Chapter-wise Important Questions

Chapters included in class 8 science ncert book.

As a student, you must know about the chapters included in the Science book of Class 8 NCERT Science book . Moreover, the relevance of some chapters in their everyday life is given here in brief:

Microorganisms: While studying the chapter on microorganisms, you will acquire knowledge regarding life under a microscope. Moreover, here you will understand which are friendly to us and the ones which are not.

Materials and Their Nature: The chapter dealing with materials and their nature is covered in one of the chapters of the Science book. You can read the book and refer to the study materials of Vedantu to understand all about the matter in detail.

Light: A chapter in the Science book for Class 8 deals with the concepts of light. You can understand how light travels and how you can split and converge white light. In the Science book, you can also find the basic experiments that you can do with light. The NCERT Class 8 Science important questions with answers come from this chapter.

Coal and Petroleum: While studying the chapter coal and petroleum, you can know about the mines and get a clear picture of how a mine works. Moreover, you can also know the places in India where the mines are found. The information about the revenue earned by the country from the coal mines is also mentioned in the chapter.

Sound: Sound is another most important chapter which you can study in detail with the NCERT Science book of Class 8. There are different experiments that you can know about from the book. Expect to learn the numerics related to the chapter also.

So, it is clear that the Science book of Class 8 has a combination of the chapters that belong to its main streams like Chemistry, Physics, and Biology.

Solved Examples

Q1. What is the Difference Between a Virus from Other Organisms?

Answer: The main difference between all other microorganisms from a virus is that it grows inside a host cell. All other unicellular organisms grow independently.

Q2. What are the Types of Reproductions that Occur in Living Organisms?

Answer: In all living organisms, there are two types of reproduction such as asexual reproduction and sexual reproduction. Asexual reproduction mainly happens in lower class organisms, where the higher ones reproduce sexually.

Significance of CBSE Class 8 Science Important Questions with Answers PDF

There are 18 chapters included in the Class 8 Science syllabus that covers vivid topics related to pollution, astronomy, light, natural phenomena, sound, force, friction, etc. These chapters need the highest attention from the students to complete preparing the syllabus. To reinforce the concepts and scientific principles, students can use the Class 8 Science Important Questions with Answers for all chapters.

Class 8 Science Term 2 Important Questions with Solutions have been compiled by following the latest CBSE syllabus to cover all the essential topics in the chapters. These questions are formulated by following the question patterns and formats of the CBSE board . In fact, the solutions are framed in a more straightforward tone so that students can easily comprehend the context behind the questions and can relate to the answers.

These Important Questions for the Class 8 Science Board Exam can be used as an evaluation tool by the students. They can solve the questions once the chapters are completed and compare their answers to the solutions. This way, they can spot the gaps in the preparations and focus on the important sections of the chapters further.

Advantages of CBSE Class 8 Science Important Questions with Answers for Board Exam

The questions have been compiled for individual chapters. Hence, the list contains separate files dedicated to all the chapters. It will become easier for the students to find the files and add them to their practice sessions.

The solutions provided with the questions are framed in a comprehensive way so that students can memorize them easily and recall them during the exams to score more.

Resolving doubts will be much easier when you have the Class 8 Science Important Questions with Answers PDF in your hands. Refer to the solutions and clarify your queries instantly to proceed with your preparation.

Follow the standard answering format of the solutions to keep your answers at par with the CBSE Class 8 standards and score more.

CBSE Class 8 Science Study Materials

Other CBSE Class 8 Important Questions Related Links

The Class 8 Science Important Questions with Answers provided by Vedantu offer valuable insights in simple language. These resources aim to enhance understanding and retention of key scientific concepts among students. By presenting essential questions and providing clear, concise answers, Vedantu helps learners grasp fundamental principles effectively. The emphasis on simplicity ensures that students can easily comprehend complex topics, fostering a strong foundation in science.

Get the free PDF version of these questions and solutions for all the chapters. Practice answering these questions and develop your concepts better. Learn how to attempt to answer such fundamental questions by following the solutions and gaining confidence to stay ahead of the competition.

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FAQs on Class 8 Science Important Questions with Answers

1. What is the relevance of practising extra questions of Class 8 Science?

Ans: You can enjoy a lot of perks while solving more questions that are generally available on the Vedantu website. It can help you write different answers for a common question as per the right concept that can fetch good marks. The best you can do is consult with the experts of Vedantu and go through the papers available on their site. Moreover, the Vedantu question papers can help you to revise a chapter after completion. Mostly, you can enhance the language and presentation style of the answers while solving the papers. Make sure to draw the diagrams wherever needed as it can boost up the chances of getting marks.

2. Why is it important to find CBSE question papers for preparing a Science chapter, and where can we get them?

Ans: You should always get the CBSE question papers for solving as it can help you know the examination pattern. So, you can get questions in a familiar language while facing the examination. You can visit the site of Vedantu and get all the question papers. There are links where you can click and see the questions based on years. Remember to pick up random question papers from the Vedantu site and solve it multiple times in the intervals of short periods. Access to the question papers is free and you can easily download the pdf versions from the site.

3. What are the chapters included in the NCERT book of Class 8 Science?

Ans: The NCERT book of Class 8 Science consists of the following chapters:

Chapter 1–Crop Production and Management

Chapter 2 –Microorganisms: Friend or Foe

Chapter 3–Synthetic Fibres and Plastics

Chapter 4–Materials: Metals and Non-Metals

Chapter 5–Coal and Petroleum

Chapter 6–Combustion and Flame

Chapter 7–Conservation of Animals and Plants

Chapter 8 - Cell- Functions and Structure

Chapter 9–Reproduction in Animals

Chapter 10–Reaching the Age of Adolescence

Chapter 11–Force and Pressure

Chapter 12–Friction

Chapter 13–Sound

Chapter 14–Chemical Effects of Electric CurrentChapter 15–Some Natural Phenomena

Chapter 16 - Light

Chapter 17–Star and The Solar System

Chapter 18–Pollution of Water and Air

4. How can I develop the best study plan for Class 8 Science?

Ans: To develop the best study plan for Class 8 Science obey the given points:

Managing time is very important. Therefore, create a timetable so that you can focus on every chapter.

Use the NCERT book for reading the chapters as the content of the book is prepared by professionals.

Take the help of Vedantu’s website for downloading the important questions of all the chapters.

Work out on the sample papers and previous years question papers to have a strong grip on the topics.

5. What is the method that students follow to download the important questions of Class 8 Science?

Ans: Beneath are the steps that will be helpful in downloading the important questions of Class 8 Science:

Visit the link of Important Questions for CBSE Class 8 Science, Chapter wise Solutions - Free PDF Download.

As the link will open, the official page of Vedantu will appear on the screen of your device.

This official page will provide you with the list of the chapters of Class 8 Science.

Select the chapter you want to download for the important questions.

Then hit on the “Download PDF” option.

The important questions will get downloaded in PDF format.

6. What are the benefits of downloading and studying important questions of Class 8 Science from Vedantu?

Ans: The perks of studying or downloading important questions of Class 8 Science from Vedantu are:

The content is prepared by the subject matter experts.

Important questions of all the chapters are available.

These problems are based on the NCERT syllabus. 

Vedantu allows you to study offline by giving the option to download the important questions.

These important questions are available in the form of PDF files. These solutions are available at free of cost on Vedantu(vedantu.com) and mobile app.

Vedantu also allows you to ask your doubts through online chat.

7. How to achieve good results in Class 8 Science?

Ans: Below are the points which will help students in getting a good result in Class 8 Science:

To start with your preparation, first know about your syllabus.

Study every chapter from the NCERT book.

Make use of mock tests and previous years sample papers to get a hint about the exam pattern.

Have a habit of writing. This will improve your writing speed and help you to learn things faster.

While giving the exam, try to solve those questions first whose answer you know.

8. What is the most important chapter in science class 8?

Cell Structure and Function: This lays the groundwork for understanding living organisms.

Chemical Reactions and Equations: Understanding chemical reactions is crucial for various scientific concepts.

Light: This chapter forms the basis for understanding optics and other phenomena.

9. How to get 100 marks in science class 8?

While aiming for a perfect score is commendable, the focus should be on thorough understanding rather than just marks. However, here are some tips that might help:

Grasp concepts deeply: Don't just memorize facts, strive to understand the "why" behind them.

Practice consistently: Regularly solve problems, answer practice questions, and revise concepts.

Pay attention in class: Actively participate, ask questions, and clarify doubts with your teacher.

Manage time effectively: Create a study plan, schedule revisions, and avoid last-minute cramming.

10. Class 8 is very important?

Class 8 acts as a bridge between the foundational concepts learned in earlier grades and the more complex topics introduced in higher classes. It's crucial for building a strong foundation in Science and other subjects.

11. How to top in science exam class 8?

While "topping" isn't the only measure of success, here are some strategies:

Follow the tips mentioned above to get high marks.

Focus on understanding the exam format and marking scheme.

Practice mock tests and previous year papers to manage time and get familiar with the question pattern.

Seek help from teachers or tutors if you face any difficulties.

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Thursday 15 December 2022

Cbse class 8 - physics - sound - case study based question #class8science #sound #physics #eduvictors.

CBSE Class 8 - Physics - Sound - Case Study Based Question

CBSE Class 8 - Physics - Sound - Case Study Based Question #class8Science #Sound #Physics #eduvictors

Q1. Read the following and answer the questions given below:

Sound is a form of energy that is produced when air molecules vibrate in a particular pattern called waves. Hence, the sound is a wave. Sound is produced by vibrating objects. Vibration can be described as to and fro motion of an objects. Sound cannot be produced without any vibrations. Sound always requires a medium to travel from the source of its production to the receiver end. Speed of the sound is maximum in solids and minimum in gases.

(i) The audible frequency range of a human ear is:

(a) The range of audible frequency of human ear is 20 to 200 Hz

(b) The range of audible frequency of human ear is 2 Hz to 20 Hz

(c)The range of audible frequency of human ear is 200 to 2000Hz.

(d) The range of audible frequency of human ear is 20 to 20,000Hz

(ii) Ria used a device to measure the loudness of a machine. She recorded her observation as given below. Which of the following represents the correct measurement of loudness?

(iii) Arrange the speed of sounds in solids, liquids and gases in an ascending order:

(a) Gas < Liquid < Solid

(b) Liquid > Gas > Solid

(c) Liquid < Solid < Gas

(d) Solid > Liquid > Gas

(iv) The number of vibrations made by a vibrating body in one second is:

(a) frequency

(c) loudness

1.  (d) The range of audible frequency of human ear is 20 to 20,000Hz

2.  (c) 80 dB

3.  (a) Gas < Liquid < Solid

4.  (a) frequency

Ch 13 - Sound (Q & A) Ch 13 - Sound (MCQs) Ch 13 - Sound (Worksheet) Ch 13 - Sound (Question Bank) Ch 13 - Sound (Worksheet)

CBSE All In One NCERT Based Science Class 8 2022-23 Edition

case study questions grade 8 science

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Case Study Questions Class 8 Science Pollution of Air and Water

Case study questions class 8 science chapter 18 pollution of air and water.

CBSE Class 8 Case Study Questions Science Pollution of Air and Water. Important Case Study Questions for Class 8 Board Exam Students. Here we have arranged some Important Case Base Questions for students who are searching for Paragraph Based Questions Pollution of Air and Water.

CBSE Case Study Questions Class 8 Science Pollution of Air and Water

Case study 1.

Que. 1) Which among the following air pollutants reduces the oxygen carrying capacity of the blood?

(b) Carbon monoxide

(a) Nitrogen dioxide

Que. 2) (d) Chlorofluorocarbons

Que. 3) (b) Smog

Case study 2

Que. 1) The phenomenon of acid rain corroding the monuments made up of marbles is known as ……………………………………………………………………………………… .

(c) Marble cancer

(a) Carbon dioxide

(b) Methane

Case study 3

Que. 1) Majority of people living in regions which are threatened by global warming are in ……………………………………………………………………………………………… .

(d) Antarctica

Que. 4) What is “Van Mahotsav”?

Que. 4) Answer: Van Mahotsav is celebrated in the month of July every year, when lakhs of trees are planted. Planting large amounts of trees can help reduce the amount of carbon dioxide from the environment.

Case study 4

Que. 1) Government of India launched which of the following initiative in 2016 for the purpose of cleaning river ganga?

(d) Zooplanktons

(c) Industries should stop working.

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Case Study Questions for Class 8 Science Chapter 11 Force and Pressure

  • Last modified on: 11 months ago
  • Reading Time: 5 Minutes

Here we are providing case study questions for CBSE Class 8 Science Chapter 11 Force and Pressure .

Case Study Questions

Question 1:

Read the passage and answer the following questi ons

The discovery of atmospheric pressure gives a fact that air has weight. The weight of the atmosphere presses down on the earth’s surface and creates pressure on it. The pressure at any point exerted by the weight of the air above is called atmospheric pressure. The atmospheric pressure on the earth’s surface at sea level is one hundred thousand pascals i.e., 100 KPa. The atmospheric pressure at a place decrease with an increase in altitude. The atmospheric pressure at a place is the force exerted by the weight of the air column above that place. As we go up the length of the air column above us decreases. This means that its weight and the atmospheric pressure are smaller at higher places than at sea level. If the pressure of the atmosphere is removed suddenly, our blood vessels and tissues will rupture due to the pressure of the blood and other fluids inside. Thus, the spacemen also wear special pressurised suits as in space there is no air and hence, no air pressure. At the top of a mountain, some people can feel their ears “popping” due to a decrease in air pressure. The ears pop to balance the difference in pressure inside and outside the body.

Answer the questions given below:

a) What is atmospheric pressure? b) We know that there is a huge amount of atmospheric pressure on us. But we do not experience its effect. Why? c) Why do some people feel their ears “popping” at the top of the mountain?

a) The pressure exerted by the air around us is known as atmospheric pressure.

b) The pressure of the air inside our body is the same as that of the pressure outside. Therefore, we do not experience its effect.

c) Some people feel their ear-popping at the top of the mountain due to the decrease in the air pressure. The ears pop to balance the difference in pressures inside and outside of the body.

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  1. Class 8 Science Case Study Question

    CBSE Class 8 Science Case Study Question. Chapter 1 Crop Production and Management Case Study Question. Chapter 2 Microorganisms: Friend and Foe Case Study Question. Chapter 3 Synthetic Fibres and Plastics Case Study Question. Chapter 4 Materials: Metals and Non-Metals Case Study Question.

  2. Force and Pressure Class 8 Case Study Questions Science Chapter 8

    Case Study Questions on Force and Pressure. Questions. Question 1: Read the given passage below and answer the question: In a game of volleyball, players often push the moving ball to their team mates to make a winning move. Sometimes the ball is returned to the other side of the court by pushing or smashing it.

  3. Case Study Questions for Class 8 Science Chapter 1 Crop Production and

    Here we are providing case study questions for CBSE Class 8 science Chapter 1 Crop Production and Management. Case Study Questions. Question 1: A boy named Yash from Gwalior who studies in 8th standard is very fond of plants. He has a small garden in the backyard. Where he's planted many small plants and takes good care of them.

  4. Case Study Questions Class 8 Science

    CBSE Case Study Questions Class 8 Science Crop Production and Management Case study 1. When plants of the same kind arecultivated at one place on a large scale,it is called a crop. For example, crop ofwheat means that all the plants grownin a field are that of wheat.You already know that crops are ofdifferent types like cereals, vegetablesand ...

  5. Microorganisms: Friend and Foe Class 8 Case Study Questions Science

    Case Study Questions on Microorganisms: Friend and Foe. Questions. Q.1. Yash lived in Delhi and he loves to play football. But as of now his half yearly exams were going on so his mother didn't allow him to go out and play. She promised Yash that as soon as his exams are over, he can go and play.

  6. Crop Production and Management Class 8 Case Study Questions Science

    Case Study Questions on Crop Production and Management. Questions. Question 1: A boy named Yash from Gwalior who studies in 8th standard is very fond of plants. He has a small garden in the backyard. Where he's planted many small plants and takes good care of them.

  7. CBSE 8th Standard CBSE all Case study Questions Updated

    CBSE 8th Standard CBSE all English medium question papers, important notes , study materials , Previuous Year questions, Syllabus and exam patterns. Free 8th Standard CBSE all books and syllabus online. Practice Online test for free in QB365 Study Material. Important keywords, Case Study Questions and Solutions. Updates about latest education news and Scholorships in one place

  8. Case Study Questions Class 8 Science Microorganisms: Friend and Foe

    At Case Study Questions there will given a Paragraph. In where some Important Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks, 4 marks. CBSE Case Study Questions Class 8 Science Microorganisms: Friend and Foe Case study 1. You have seen several kinds ofplants and ...

  9. CBSE Important Questions for Class 8 Science

    CBSE Important Questions for Class 8 Science help students face the exams confidently. As the exam nears, they should complete the syllabus and start with the revision. The CBSE Important Questions for Class 8 Science will help them revise the subject quickly. Here, we have compiled the important questions for all the chapters of the CBSE Class 8 Science subject.

  10. Case Study Questions Class 8 Science Conservation of Plants and Animals

    CBSE Case Study Questions Class 8 Science Conservation of Plants and Animals Case study 1. A great variety of plants and animalsexist on earth. They are essential for thewell-being and survival of mankind.Today, a major threat to survival of theseorganisms is deforestation. We knowthat deforestation means clearing offorests and using that land ...

  11. Case Study Questions for Class 8 Science Chapter 12 Friction

    Here we are providing case study questions for CBSE Class 8 Science Chapter 12 Friction. Case Study Questions. Question 1: Friction is a force between two surfaces that are sliding, or trying to slide, across each other. Friction always works in the direction opposite to the direction in which the object is moving, or trying to move.

  12. Friction Class 8 Case Study Questions Science Chapter 9

    Questions. Question 1: Read the given passage below and answer the question: (I) The force required to overcome friction at the instant an object starts moving from rest is a measure of static friction. On the other hand, the force required to keep the object moving with the same speed is a measure of sliding friction.

  13. Case Study Questions Class 8 Science Cell

    It controls the transfer of hereditary characteristics from parents to offspring. Que. 5)Answer: Green coloured plastids are known as chloroplasts. They provide green colour to leaves and are essential for photosynthesis. CBSE Class 8 Case Study Questions Class 8 Science Chapter 8 Cell - Structure and Functions.

  14. Class 8 Science Question Papers, Notes, Tests

    The CBSE Revision Notes for class 8 Science are available in PDF format and can be downloaded from our site absolutely free. In fact, teachers can use these NCERT questions to generate question papers. Links to various NCERT solutions for Class 8 Science have been given below: 01 Crop Production and Management. 02 Microoraganisms Friends and Foe.

  15. Case Study Questions for Class 8 Science Chapter 6 Combustion and Flame

    Here we are providing case study questions for CBSE Class 8 Science Chapter 6 Combustion and Flame. Case Study Questions. Question 1: Read the passage carefully and attempt the questions given below. A chemical process in which a substance reacts with oxygen to give off heat is called combustion. The substance that undergoes combustion is said ...

  16. Class 8 Science Important Questions with Answers

    Also, check CBSE Class 8 Science Important Questions for chapter-wise PDF for other chapters: CBSE Class 8 Science Important Questions with Answer PDF. Chapter 1 - Crop Production and Management. Chapter 2 - Microorganisms : Friend and Foe. Chapter 3 - Synthetic Fibres and Plastics. Chapter 4 - Materials : Metals and Non-Metals.

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    CBSE Class 8 - Physics - Sound - Case Study Based Question #class8Science #Sound #Physics #eduvictors CBSE Papers, Questions, Answers, MCQ ... Blog provides NCERT solutions, CBSE, NTSE, Olympiad study material, model test papers, important Questions and Answers asked in CBSE examinations. ... (253) class10-science (245) class10-english (243 ...

  18. Case Study Questions Class 8 Science Reaching the age of adolescence

    CBSE Case Study Questions Class 8 Science Reaching the age of adolescence Case study 1. Changes at Puberty: Increase in HeightThe most conspicuous change duringpuberty is the sudden increase inheight. At this time the long bones, thatis, the bones of the arms and the legselongate and make a person tall.Initially, girls grow faster than boysbut ...

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    Neurological Assessment HESI Case Study EXAM 2024-2025 QUESTIONS AND ANSWERS 100 % PASS SOLUTION A+ GRADE. Neurological Assessment HESI Case Study EXAM 2024-2025 QUESTIONS AND ANSWERS 100 % PASS SOLUTION A+ GRADE. 0. ... Accounting Anthropology Architecture Art Astronomy Biology Business Chemistry Communications Computer Science. View all for ...

  20. Category: Case Study Questions for Class 8 Science

    11 months ago August 2, 2023 Physics Gurukul Leave a Comment on Case Study Questions for Class 8 Science Chapter 1 Crop Production and Management. Case Study Questions for Class 8 Science Chapter 1 Crop Production and Management. Join our Telegram Channel for Free PDF Download. Join Now! NCERT Books & Solutions ...

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  22. Case Study Questions for Class 8 Science Chapter 2 Microorganisms

    Here we are providing case study questions for CBSE Class 8 science Chapter 2 Microorganisms-Friend and Foe. Case Study Questions. Question 1: Daksh lived in delhi and he loves to play football. But as of now his half yearly exams were going on so his mother didn't allow him to go out and play. She promised Daksh that as soon as his exams are ...

  23. Case Study Questions Class 8 Science Pollution of Air and Water

    At Case Study Questions there will given a Paragraph. In where some Important Questions will made on that respective Case Based Study. There will various types of marks will given 1 marks, 2 marks, 3 marks, 4 marks. CBSE Case Study Questions Class 8 Science Pollution of Air and Water Case study 1

  24. Case Study Questions for Class 8 Science Chapter 11 Force and Pressure

    Here we are providing case study questions for CBSE Class 8 Science Chapter 11 Force and Pressure. Case Study Questions. Question 1: Read the passage and answer the following questions. The discovery of atmospheric pressure gives a fact that air has weight. The weight of the atmosphere presses down on the earth's surface and creates pressure ...