What is sound?

Question

I need HELP!!! were doing a sound essay and need help!!!

Answer 1

Sound is the discrete disturbance of air molocules caused by vibrations. (which is why there is no sound in the vacuum of space). You need vibration source, and a conducive carrier like air to make sound. But the conducive element can also be as simple as a taut string connected to two tin cans, like kids use for primative walkie-talkies. Vibration + conduction = sound.

Answer 2

Sound is energy that simply travels in waves. These waves are vibrations where the air particles hit against each other until they reach the inner ear causing the ossicle bones to vibrate and send info to the brain via the auditory nerves. Start you essay with the slogan that was used to advertise the Film Alien. IN SPACE NO ONE CAN HEAR YOU SCREAM!!. I use this in teaching sound as without air particles( Space is a vacuum) there is no sound. Then discuss the two forms of waves - longitudinal and transverse and examples of these, then equipment that detects sound, then the structure of the ear perhaps, then the mathematics of sound, (Hertz, wavelength, amplitude, frequency) and perhaps noise pollution

Answer 3

Sound is a disturbance of mechanical energy that propagates through matter as a wave. Sound is characterized by the properties of sound waves which are frequency, wavelength, period, amplitude and velocity or speed.

Explanation
Noise and sound often mean the same thing; they differ when a noise is an unwanted sound. In science and engineering, noise is an undesirable component that obscures a signal.

Humans perceive sound by the sense of hearing. By sound, we commonly mean the vibrations that travel through air and can be heard by humans. However, scientists and engineers use a wider definition of sound that includes low and high frequency vibrations in air that cannot be heard by humans, and vibrations that travel through all forms of matter, gases, liquids and solids. The matter that supports the sound is called the medium. Sound propagates as waves of alternating pressure, causing local regions of compression and rarefaction. Particles in the medium are displaced by the wave and oscillate. The scientific study of sound is called acoustics.

Sound can be characterized as a disturbance of molecules across one of the three types of mediums listed above. As the wave passes across the medium it transfers its energy along the molecules by particle interaction. Since it always needs a medium through which to travel, in environments that resemble a vacuum, such as outer space, there cannot be any audible sound.

You could get more information from the link below...

Answer 4

Sound waves can travel through air, water and solid steel. We hear music filling the air in a room. Warships detect enemy subs using sonar (word similar to sonic?). People used to hear trains coming by placing their ears to the steel rails. Sound is often organized such as the steady tone of a flute or disorganized such as the crash of a stack of dishes (noise). Picture a gym full of basketballs. Someone causes the gym doors to open and close over and over in a smooth action (tone of flute?). Every basketball (air molecule?) feels every push and shove. Those closest to the door feel the shove most but those on the opposite side of the gym are affected at least a little. Sound travels through a medium (air, water or stee, etc.) by pushing on molecules. Sound can not travel through a vacuum because there are zero molecules to push. Sound gets weaker and weaker away from the source (by the inverse square law) because the available "shove" must be shared by more and more molecules. Our ears are very sensitive to sound (a survival feature) and can detect vanishingly small waves of sound or the other extreme, Bang!

Answer 5

Sound is made up of vibrations in the form of waves that travel through matter, cunningly known as sound waves.
Sound waves have a frequency, velocity, period, amplitude and wavelength. These properties differ to create different sounds.

Answer 6

if a tree falls in the forest but no one is there to hear it does it make a sound? hope that helps

Answer 7

sound is the vibration of Air molecules againest each other

In Space no-one can hear you scream

Answer 8

IT IS the pesponse of ur ear when an external energy entered into ur ear,and work done by it.

Answer 9

Sound is variations in air pressure.


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Answer 10

waves of energy that displace atmospheric molecules and our ears can differentiate between the waves.