what do you mean by supersonic sound?
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sound travels at about 580 miles per hour so if you travel at say 583 miles per hour then its supersonic, thats when you hear the boom on an aircraft as it breaking through the sound barrier
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(1) The Sound is a  physical phenomenon that stimulates the sense of hearing. \n(2) In human beings, hearing takes place whenever vibrations of frequencies between about 15 and 20,000 hertz reach the inner ear.\n(3)  The hertz (Hz) is a unit of frequency equalling one cycle per second. Such vibrations reach the inner ear when they are transmitted through air, and the term sound is sometimes restricted to such airborne vibrational waves. Modern physicists, however, usually extend the term to include similar vibrations in liquid or solid media. Sounds of frequencies higher than about 20,000 hertz are called ultrasonic
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No. Sound is a waveform of energy that travels from particle to particle. When there's no particles the wave stops. Kind of like waves of the sea don't continue on land.\n\nBut - if you have a planet with atmosphere that's thick enough you'd get sound.
27002
sound, any disturbance that travels through an elastic medium such as air, ground, or water to be heard by the human ear. When a body vibrates, or moves back and forth (see vibration), the oscillation causes a periodic disturbance of the surrounding air or other medium that radiates outward in straight lines in the form of a pressure wave. The effect these waves produce upon the ear is perceived as sound. From the point of view of physics, sound is considered to be the waves of vibratory motion themselves, whether or not they are heard by the human ear.
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None, sound is a wave not a particle. Sound is just a wave of vibrations travelling through atoms.
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thunder is a sound..\nlightning maybe
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Sound is a form of energy which is audible that is it can be registered by the ear. It travels in a medium and cannot travel in vaccuum. It is propagated in air as a series of compression and rarefaction (or expansion zones) these zones exist along the line joining the source and observer.\n\nIt is hard to localise sound unlike light because sound travels due to the disturbance of the material particles themselves.\n\nSound travels faster in a denser medium.
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Modren artillery shells travel at supersonic speeds.  If you heard it - it missed.\n\nBTW, in real life you only hear a rocket or mortar round for about 1/2 second.  Then it has either flown past you or you have had a very loud noise closer to you than you'd really prefer.
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When you clap your hands, you compress the air between your palms.  That compression of air causes the load clap sound.  When a jet travels at extremely fast speeds, it compresses air in front of it and so causes the sonic boom.  The same goes with thunder.  When lightning strikes, the air around the lightning bolt is heated to very high temperatures and expands and pushes out at the surrounding air and this causes a compression against the surrounding air and you hear the violent thunder.
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a drastic change in a medium leading to multiple areas"A shock wave (or simply "shock") is a type of propagating disturbance. Like a normal wave, a shock wave carries energy and can propagate through a medium or, in special cases, through a field such as the electromagnetic field in the absence of a physical medium. Shock waves are characterized by a sudden change in the characteristics of the medium (such as pressure, temperature, or speed) as a positive step function. The corresponding negative step is an expansion wave. A shock wave travels through the medium at a higher speed than a normal wave.\n\nUnlike solitons (another kind of nonlinear wave), the energy of a shock wave dissipates relatively quickly with distance. Additionally, the companion expansion wave from a shock approaches, and eventually merges with the shock, partially cancelling it out. Thus the sonic boom associated with the passage of an aircraft is the sound wave resulting from the degradation and merging of the shock wave-expansion wave pair produced by the passage of a supersonic aircraft.\n\nContents [hide]\n1 Shock waves in supersonic flows \n2 Shock waves due to nonlinear steepening \n3 Analogies \n4 Types of shock wave \n5 External links \n6 See also \n \n\n\n[edit]\nShock waves in supersonic flows\n \nPressure-time diagram at a point for a shock wave propagating past the observerThe shock wave is one of several different ways in which a gas in a supersonic flow can be compressed. Two other methods are isentropic and Prandtl-Meyer compressions. The method of compression of a gas results in different temperatures and densities for a given pressure ratio, which can be analytically calculated for a non-reacting gas. A shock wave compression results in a loss of total pressure, meaning that it is a less efficient method of compressing gases for some purposes, for instance in the intake of a scramjet. The appearance of pressure-drag on supersonic aircraft is mostly due to the effect of shock compression on the flow.\n\nWhen an object (or disturbance) moves faster than the information about it can be propagated into the surrounding fluid, fluid near the disturbance cannot react or "get out of the way" before the disturbance arrives. In a shock wave the properties of the fluid (density, pressure, temperature, velocity, Mach number) change almost instantaneously. Measurements of the thickness of shock waves have resulted in values approximately one order of magnitude greater than the mean free path of the gas investigated.\n\nShock waves are not sound waves; a shock wave takes the form of a very sharp change in the gas properties on the order of a few mean free paths (roughly micro-meters at atmospheric conditions) in thickness. Shock waves in air are heard as a loud "crack" or "snap" noise. Over time a shock wave can change from a nonlinear wave into a linear wave, degenerating into a conventional sound wave as it heats the air and loses energy. The sound wave is heard as the familiar "thud" or "thump" of a sonic boom, commonly created by the supersonic flight of aircraft.\n\n[edit]\nShock waves due to nonlinear steepening\nShock waves can form due to steepening of ordinary waves. The best-known example of this phenomenon is ocean waves that form breakers on the shore. In shallow water, the speed of surface waves is dependent on the depth of the water. An incoming ocean wave has a slightly higher wave speed near the crest of each wave than near the troughs between waves, because the wave height is not infinitesimal compared to the depth of the water. The crests overtake the troughs until the leading edge of the wave forms a vertical face and spills over to form a turbulent shock (a breaker) that dissipates the wave's energy as sound and heat.\n\nSimilar phenomena affect strong sound waves in gas or plasma, due to the dependence of the sound speed on temperature. Strong waves heat the mediu
37506
either sound, waves or air.
962601
It is like SONAR.  A high frequency sound is emitted that bounces off surfaces inside your body.  The bounced back sound is collected and is used to generate a picture of your insides.
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According to the Merriam-Webster dictionary sound is defined as, "1 a : a particular auditory impression : TONE b : the sensation perceived by the sense of hearing c : mechanical radiant energy that is transmitted by longitudinal pressure waves in a material medium (as air) and is the objective cause of hearing." According to this definition the sound MUST be perceived, therefore, if no one is around, the tree DOES NOT make a sound.
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Sonic booms are audible shock waves in air, and they generate large amounts of sound energy.  They commonly occur when an aircraft breaks the sound barrier.\n\nOne issue involving shockwaves and the environment is the large amount of noise pollution they produce.  An example of this can be found in the story of the Concorde (a passenger plane that could break the sound barrier).  Concordes were used only for over-ocean flights, as the sonic booms they produced would have caused noise pollution in overland flights.
223069
Thunder is the sound made when lightning sweeps through the air, then back, and then the air collides together, making the "boom".  Lightning is a bright flash of electricity.
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Sound is a compressional wave and it requires atoms to make energy travel through. think of a pool stick being your mouth. being on earth is the same as having pool balls in front of it therefor the nergy is transferred. however in space, think of your pool stick without any pool balls in front of your stick. nothing happens. becuase there is nothing to transfer the energy. the medium is the matter that carries the sound waves.\n\nLight is a very special wave. it has tiny particles called photons that are infinity small(meaning we can't measure them but we know they are there becuase they ionize special elements.) so light is really a combination of energy and matter. and since light has a medium(tiny particles) within itself it doesn't need any other matter to travel. it can change mediums however, light travels faster in less dense areas than more dense areas which explains that is has tiny particles. sound is just a compressional wave which means when the matter is more dense it travels faster becuase the time required to travel is less becuase the molecules are closer. since light has its own molecules it can't travel through dense matter becuase the dense molecules block the light's particles from traveling.
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http://www.webplaces.com/html/sounds.htm