Last Updated on December 2, 2024 by XAM CONTENT
Hello students, we are providing case study questions for class 9 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 9 science. In this article, you will find case study questions for cbse class 9 science chapter 11 Sound.
| Chapter | Sound |
| Type of Questions | Case Study Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 9 |
| Subject | Science |
| Theme | Moving Things, People and Ideas |
| Useful for | Class 9 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 9 Science Chapterwise Case Study |
Case Study Questions on Sound
Questions
Question 1:
Two friends Shefali and Anuj make a toy telephone by joining two plastic cups through a long string. They both stand apart. Anuj speaks softly into one cup and Shefali hears by putting her ear in the other cup. Now, Shefali speaks and Anuj listens.
Read the given passage carefully and give the answer of the following questions:
Q 1. What type of waves are produced by voice of Anuj and Shefali in the air inside the plastic cup?
Q 2. What type of waves are produced in the string?
Q 3. Give one difference between these types of waves.
Q 4. Why is sound wave called a longitudinal wave?
Q 5. Waves of frequency 100 Hz are produced in a string as shown in figure. Give its amplitude and wavelength.
Answers
- Longitudinal waves
- Transverse waves
- In longitudinal wave, particles vibrate parallel to the direction of wave propagation. In transverse wave, particles vibrate perpendicular to the direction of wave propagation.
- The sound wave is called a longitudinal wave because in a sound wave, the particles of the medium move in a direction parallel to the direction of propagation of the disturbance.
- Amplitude = 5 cm (maximum displacement from mean position)
Wavelength = 20 cm (Distance between two crests or troughs)
Also check
Case study questions for other chapters of class 9 science is given below.
- Improvement in Food Resources Class 9 Case Study Questions Science Chapter 12
- Sound Class 9 Case Study Questions Science Chapter 11
- Work and Energy Class 9 Case Study Questions Science Chapter 10
- Gravitation Class 9 Case Study Questions Science Chapter 9
- Force and Laws of Motion Class 9 Case Study Questions Science Chapter 8
- Motion Class 9 Case Study Questions Science Chapter 7
- Tissues Class 9 Case Study Questions Science Chapter 6
- The Fundamental Unit of Life Class 9 Case Study Questions Science Chapter 5
- Is Matter Around Us Pure Class 9 Case Study Questions Science Chapter 2
- Matter in Our Surroundings Class 9 Case Study Questions Science Chapter 1
We hope the given case study questions for Sound Class 9 helps you in your learning.
Helpful Links for CBSE Class 9 Science Preparation
- Download Latest Sample Papers for CBSE Class 9 Science
- Download Worksheets for CBSE Class 9 Science
- Download Chapter Tests for CBSE Class 9 Science
- Download Case Study Question Bank for CBSE Class 9 Science
- Download Numerical Problems for CBSE Class 9 Physics
- Download Important MCQs for CBSE Class 9 Physics
Topics from which case study questions may be asked
- Nature of sound and its propagation in various media
- Speed of sound
- Range of hearing in humans; ultrasound; reflection of sound; echo and SONAR.
- Structure of the Human Ear (Auditory aspect only).
Any periodic disturbance produced in a material medium due to the vibratory motion of the particles of the medium constitutes a wave.
Wave motion refers to the movement of a disturbance produced in one part of a medium to another. It involves the transfer of energy but not the transfer of matter.
Sound waves are longitudinal waves but light waves are transverse waves.
For further practice on case study questions related to Sound Class 9 Science, we recommend exploring the link given below.
Quiz
| Topic | Sound |
| Useful for | CBSE Class 9 Students |
| Type of Questions | MCQs |
| No. of Questions | 10 |
| Solutions | Instant Solutions after Completion of Quiz |
| Quiz Link | Click here to Take Test |
| Price | Free |
How to take quiz or test using the given link
It’s quite simple!
Step 1: Click on the given link. You will see the below screen.
Step 2: Fill in the necessary details. There is no need to register. Just fill your email and name and click on the button “Take Assessment”. The below screen will appear.
Step 3: Click on start assessment. Now you are ready to take test.
Frequently Asked Questions (FAQs) on Sound 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 9 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 chemical reactions and equations, and formulate well-supported solutions or responses.
Q4: Are there any resources available online for students to practice case study questions on class 9 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. If you need more case study questions for your preparation, then you visit Physics Gurukul website.
Q5: How can students effectively prepare for case study questions on “Sound” 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 “Sound” class 9 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 “Sound”.
Q7: Do waves transport energy?
A7: Yes, waves transport energy.
Q8: Name the waves that can travel through vacuum.
A8: Electromagnetic waves.
Q9: Define frequency. Name the unit of frequency.
A9: The number of vibrations per second is called frequency. It is measured in hertz.
Q10: What are transverse waves?
A10: A wave in which the particles of the medium vibrate up and down ‘at right angles’ to the direction in which the wave is moving, is called a transverse wave.
Q11: What are longitudinal waves?
A11: A wave in which the particles of the medium vibrate back and forth along the same direction in which the wave is moving, is called a longitudinal wave.
Q12: What do you mean by pulses?
A12: The waves set up by a single disturbance in the medium are called pulses.
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