Class 9 Science Chapter 12 - Sound NCERT Solutions Free PDF Download
NCERT Solutions for Class 9 Science Chapter 12 - Sound
FAQs on NCERT Solutions for Class 9 Science Chapter 12 - Sound
1. What is Sound and How it is Produced? Give an Example.
Sound is considered as a form of energy that is produced due to the vibration of objects. Vibration refers to the fast to and fro motion of a particular object. It is said that when a body vibrates due to some reason, it causes disturbance in the medium by the particles. For example, when a rubber band is stretched, it vibrates and produces some sound. In this case, the vibrating body can travel through the medium, but the particles do not show any motion and stay still without moving forward. This is how sound is produced.
2. Explain the Working and Application of a Sonar.
SONAR is an abbreviation of sound, navigation and ranging. SONAR is known as an acoustic device that is generally used for measuring the direction, speed and depth of objects that are present underwater. For example, submarines use SONAR to investigate different objects underwater.
It functions by producing an ultrasonic sound and it is made to travel under the seawater. This is transmitted by the transducer. When it gets reflected by an object, an echo is produced that is recorded by the detector. Then the signal detected is converted into electrical signals for measurement.
3. List out the topics included in Chapter 12 of NCERT Solutions for Class 9 Science.
Vedantu's NCERT Science Solutions for chapter 12- Sound covers all the most important and basic concepts. The solution to application-based questions and numerical provided by Vedantu are easy to follow and understand. The topics that have been covered by expert teachers of Vedantu and include Production And Propagation Of Sound, Characteristics Of The Sound Wave, Wavelength, Frequency, Time Period, Amplitude, Velocity, Speed Of Sound In Various Mediums, The Reflection Of Sound, Echo And Reverberation, and Structure Of The Human Ear. To access the best NCERT solutions for Class 9 Science Chapter 12, visit the vedantu website (vedantu.com).
4. Is the NCERT Solutions for Class 9 Science Chapter 12 the best study material for the students?
Vedantu's NCERT Solutions for Class 9 Science Chapter 12 is undoubtedly the best study material for students. Vedantu provides quality answers while strictly adhering to the latest CBSE pattern and guidelines. The study material and solutions provided here are prepared by expert teachers. Follow these NCERT Solutions to score higher than before and make your exam preparation more well-structured. You can download the solutions for Chapter 12 of Class 9 Science free of cost from the Vedantu website.
5. What are the real-time applications of Sound?
Sound is an essential part of our everyday life and has several real-time applications. Reflection of sound helps in measuring the distance and speed of underwater objects through the method of SONAR. The stethoscope also works on the principle of reflection of sound. Inside a stethoscope, multiple reflections of sound take place. Through these multiple sound reflections, the sound of the patient’s heartbeat can reach the doctor’s ear.
6. What's the underlying concept of chapter 12, Sound?
Through chapter 12, Sound, important topics such as the Production And Propagation Of Sound, Medium, Waves, Characteristics Of Sound, Range Of Sound, The Reflection Of Sound and Its Applications are Covered. All these topics give us an overall and complete understanding of the phenomenon of sound in Science. The application-based learning of the sound concepts through the Vedantu study materials will make students more confident and well prepared for the examination.
7. What are the most important definitions that come in Chapter 12, Sound?
The following terms are important in Chapter 12, Sound from an examination point of view; Sound, Medium, Wave, Echo, Reverberation, Frequency, Period and Amplitude of the Sound. For the topic applications of sound, the important terms are Echocardiography and Echosonography. For the topic of the structure of the ear, you should be well-versed with the definition of every part of the ear through which sound travels until it finally reaches the eardrum.