Physics of sound ppt

The vibrations of the body cause vibrations in the particles of surrounding medium. The physics of sound sound begins with a vibration of an object vibrating object transfers energy to air medium all complex vibration patterns seen as a combination. Sound, a mechanical disturbance from a state of equilibrium that propagates through an elastic material medium. Free pdf download of ncert solutions for class 9 science physics chapter 12 sound solved by expert teachers as per ncert cbse book guidelines. Sound is a form of energy that can be heard and travels in waves. A region of increased pressure on a sound wave is called a compression or condensation. Ayesha starts the stopwatch when she sees salma make a sound and she stops it when she hears the sound herself. Waves are responsible for basically every form of communication we use. The speed of sound depends upon the type of medium and its state. Vibrations in air are called traveling longitudinal waves, which we can hear. Analyse the properties of sound understand what causes sound relate pitch and loudness to frequency and amplitude compare the hearing ranges of humans and animals. These short clips can be used to stimulate discussion and engagement in the topic of sound. Physics ppt sound free download as powerpoint presentation.

However, it does talk about a fairly large number of concepts and definitions which may be unfamiliar to you, and a careful. Understand how sound waves come from vibrations and how your ears give you the ability to hear them. If so, share your ppt presentation slides online with. Hewitts conceptual physics powerpoints use keynote to open for unit one you should know chapters 1, 2, 3, 4, 6 and 7. Ppt the physics of sound powerpoint presentation free to view. Produced by teachers tv as part of their lesson starters series, this video looks at different properties of sound. This physics tutorial discusses the nature of sound, its characteristic behaviors, and its association with the operation of musical instruments. Powerpoint presentation for university physics ii chapter 19 chapter 20 chapter 21 chapter 22 chapter 23 chapter 24 chapter 25 chapter 26 chapter 27 chapter 28 chapter 29 chapter 30 chapter 31 chapter 32 chapter 33 chapter 34 chapter 35 chapter 36 chapter 37 chapter 38.

These vibrations create sound waves which move through mediums such as air and water before reaching our ears. Sep 02, 2018 analyse the properties of sound understand what causes sound relate pitch and loudness to frequency and amplitude compare the hearing ranges of humans and animals. Characteristics of sound waves transverse and longitudinal waves classification of waves is according to the direction of propagation. It simply follow an orderly pattern or coherence, of motion. They were supplemented with some clicker questions supplied with the textbook giancoli, but most of the slides used are here in pdf format.

Pichealthy humans can hear from 20 hz to 20,000 hzultrasound sound waves with frequencies above the normal human range ofhearing. When something is making a steady sound then it must be vibrating to push the. Free powerpoint presentations about sounds for kids. For example, we can hear the musical instruments like tabla, flute, a guitar due to vibration.

Ppt the physics of sound powerpoint presentation, free. You come to know that someone is at your door when he knocks or you hear the sound of the doorbell. Oct 18, 2017 sound is produced when a body vibrates and it reaches us through vibration of particles of surrounding medium. Diffuse reflection using mirrors colour the colours of the rainbow. When the frequency of a sound doubles we say that the pitch goes up an. Download as ppt, pdf, txt or read online from scribd. Ppt the physics of sound powerpoint presentation free.

It can begin either from simple harmonic motions shms or from complicated motions. Learnhive icse grade 7 physics sound lessons, exercises. Sound waves can travel through solids, liquids, or gases. Apr 06, 2020 sound, a mechanical disturbance from a state of equilibrium that propagates through an elastic material medium. So, basically sound helps us to communicate with the other person. Table 1 gives levels in decibels and intensities in watts per meter squared for some familiar sounds. For example, sound travels faster in water than air. Sound is really tiny fluctuations of air pressure units of pressure. Sound lies at the very center of speech communication.

These are the slides i created for physics 1425 physics i for engineers in the spring of 2010. Feel free to edit and reformat as needed as different versions of powerpoint will change placeholders, colors, fonts, and animations. Learn more about the properties and types of sound in this article. The vibrations will make matter either solid, liquid or gas near it vibrate. At this speed it can go around the world 8 times in one second. Ultrasound images are created by reflected sound waves returning back to the transducer.

Ppt characteristics of sound waves powerpoint presentation. These sound waves can only travel through a solid, liquid or gas. A purely subjective, but unduly restrictive, definition of sound is also possible, as that which is perceived by the ear. When an object vibrates it causes the particles around it to move. A sound wave is both the end product of the speech production mechanism and the primary source of raw material used by the listener to recover the speakers message. Why do we hear what we hear how are sound waves produced mechanical waves sound energy requires. The physics of music music is the creation of complex sequences of sounds that have a pleasent effect. Speed of sound the speed of sound is how fast the wave or vibrations pass through the medium or matter. Ultrasound images are created by reflected sound waves returning back to the. Infrasonic sounds have frequencies lower than 20hz. Sound it is composed of waves of compression and rarefaction inwhich the human ear is sensitive. Because outer space is a vacuum with no matter, its very quiet.

For some currently inexplicable reason, when more than one frequency is heard simulatanously, it can have an a profoundly pleasent or amazingly disconcerting effect. When matter vibrates or moves back and forth very quickly, a sound is made. The vibrations of the body cause vibrations in the particles of. Sound must travel through matter because it needs the vibration of molecules to propagate. Ppt the physics of sound powerpoint presentation free to. This course is one of several courses designed for algebra based ap physics 1. The videos and resources will include lectures, demonstrations, and plenty of worked out example problems with high school physics curriculum and the ap physics 1 curriculum in mind. Infrasound sounds with frequencies below the normal human range of hearing. Because of the central role played by sound in speech communication, it is important to have a good. Oct 07, 2015 physics sound part 1 introduction class 8 viii. Light travels faster than sound what is the approximate distance of a thunderstorm when you note a 3. How do you come to know that a class is over in your school.

In this way, energy is taken away from the source of the vibrations. Sound is a form of energy and it comes from vibrations. Grades, attendance, calendar, and other useful school related resources are at. To register physics tuitions on to clear your doubts. When the frequency of a sound doubles we say that the pitch goes up an octave. Ultrasound scanning is an interactive procedure involving the operator, patient, and ultrasound instruments. Loudspeakers work by converting electrical energy into kinetic energy. A free powerpoint ppt presentation displayed as a flash slide show on id. The sound that we hear around us is the type of energy made by the vibration that travels through the air or any other medium and can be heard when it reaches a persons ear. Our ears pick them up and tell our brain what we can hear. Realtime ultrasound images are integrated images resulting from reflection of organ surfaces and scattering within heterogeneous tissues. Properties of light reflection colours refraction properties of sound hearing part 1 properties of light light travels in straight lines. The ear mechanism is able to respond to both very small and very large pressure waves by virtue of being nonlinear.

Reverberation of sound is the repeated multiple reflection of sound in any enclosed space. Arial calibri times new roman stencil default design coreldraw 6. Production of sound sound is produced due to the vibration of objects. Thus, it is the simplest of the experiments in the package. Nm2 or psi lbssquareinch carried through air at 345 ms 770 m. Reverberation occurs when the echo produced is as samestrong as the sound produced by the source. The decibel level of a sound having the threshold intensity of 10. A sound wave is an air pressure disturbance that results from vibration. Sound produced by teachers tv as part of their lesson starters series, this video looks at different properties of sound.

Physics powerpoint templates w physicsthemed backgrounds. With that said, the approach here will be to understand music and musical instruments first, and to study the physics of waves and sound as needed to push the understanding of the music concepts. Although the physics behind ultrasound generation, propagation. One differentiates sound according to the frequency as infrasonic, audible sound, ultrasonic and hypersonic. Hp powerpoints follow cp physics and honors physics classroom discussions and are derived from cooresponding chapters in the holt text. The vibration can come from a tuning fork, a guitar string, the column of air in an organ pipe.

Learning objectives core describe the production of sound by vibrating sources describe the longitudinal nature of sound waves state that the. Sound atomic theory pressure heat energy transfer static electricity magnetism sound earth and space revision material exam material sound 101 sound 101 sound 102 sound 103 optional ppt year 8 sound notes and ws 8lb sound travelling in space media purple brown whistlers cp ws tuning fork ws vibrations generating sound waves in air prep moon. Waves and sound waves and sound chapter 14 powerpoint ppt presentation free to view. In this course we will cover the topics waves, sound, and optics. Sound can be reflected, refracted, and absorbed and also shows evidence of interference and diffraction. Sound is produced when a body vibrates and it reaches us through vibration of particles of surrounding medium.

Ultrasound application allows for noninvasive visualization of tissue structures. When an object or substance vibrates, it produces sound. The physics of sound when something is making a steady sound then it must be vibrating to push the. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.

Whether youre talking out loud or texting on your phone, theres going to be a wave transmitting information. Ncert cbse notes for class 9 science physics chapter 12 sound. A wave is a repeating disturbance that transfers energy through matter or space. The vibrating body causes the medium water, air, etc. Sonic infrasound is a sound too low for humans to hear, below 20 hertz. A region of decreased pressure on a sound wave is called a rarefaction or dilation. Physics sound part 1 introduction class 8 viii youtube. These vibrations create sound waves which move through mediums such as air. Sound sound is a mechanical wave that is an oscillation of pressure transmitted through a solid. When a school bell rings, parts of the bell will vibrate creating sound. Despite this, some understanding of the basic physics used in ultrasound is needed for optimal creation and interpretation of an ultrasound image.

Highspeed camera technology shows the vibrations, slowed many times, of objects producing a sound. Icse class 10 physics revision notes chapter 7 sound. The type of matter has a large impact on the speed at which the sound will travel. Best powerpoint templates download your favorites today. Vibration is the rapid to and fro motion of an object. Ncert solutions for class 9 science chapter 12 sound.

Calculate the speed of sound in air from this data, q3. This is the presentation i use to introduce wave mechanics and sound in my firstyear physics course at boulder city high school in nevada. Ultrasonic sounds have frequencies greater than 20000 hz. Laser light travels very fast around 300,000 kilometres per second. All chapter 12 sound exercise questions with solutions to help you to revise complete syllabus and score more marks. Types of sound audible sounds are sounds that you can hear. The matter that transports the sound is called the medium. Because of the enormous nonlinearity of the ear in sensing pressure waves, a nonlinear scale is convenient in describing the. The goal however is a deeper understanding of the physics of waves and sound than. Sound it is composed of waves of compression and rarefaction inwhich the human ear is sensitive 2.