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Sound travels in waves and is caused by vibrations. Sound travels fastest through solids, slowest in gases and at an intermediate speed through liquids. Bats and insects use a sound detection system known as echolocation to navigate their way through their environments. Echolocation is an example of a specialized sound detection system.


1. Properties of Sound Powerpoint Templates 2. • Incredible Human Machine video – how sounds are perceived & produced (5:35) Powerpoint Templates 3. What is Sound?• A sound is any vibration (wave) traveling through the air or other medium which can be heard when it reaches a persons ear.


Sound has a huge impact on our day to day lives. Just think of how much of our technology involves sending or receiving sounds in various forms. Most people don’t fully understand what sound is. In this section we will be looking at the basic properties of sound. Sound is a longitudinal wave.


In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Humans can only hear sound waves as distinct pitches when the frequency lies between about 20 Hz and 20 kHz.


Sound waves are different than light waves. Properties of sound waves are. 1. It is a longitudinal wave. 2. It requires Material medium for propogation of energy. 3. Speed of sound depends on the ...


In the 19th century, scientists developed wave models to visualize how sound waves moved. They understood that sound is a series of compressed air, characterized by sound molecules close together, followed by rarefied air, in which the molecules are farther apart. Waves that follow this pattern are called longitudinal waves.


The speed of a sound wave depends on properties of the medium occurs when a sound wave moves from one medium into another in which its speed is different?


A unit that compares the loudness of different sounds. Each 10 dB increase in sound level represents a tenfold increase in intensity. Example: A sound at 30 dB is ten times more intense than a sound at 20 dB. Sounds louder than 100 dB can cause damage to your hearing.


(sound starts, then stops) For instance, this speaker is still playing a note, but we can't hear it right now. Dogs could hear this note, though. Dogs can hear frequencies up to at least 40,000 hertz. Another key idea in sound waves is the wavelength of the sound wave.


Sound Wave Properties. All waves have certain properties. The three most important ones for audio work are shown here: Wavelength: The distance between any point on a wave and the equivalent point on the next phase. Literally, the length of the wave.