Sound and Acoustics notes

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This Sound and Acoustics page gathers a small set of community-made notes, covering vibrations, hearing, resonance and the Doppler effect. They are for school students, university students and professional candidates studying sound, as well as teachers looking for material. Choose a note to start.

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Light & Sound Summary SCIENCE TOPIC TEST 2 REVISION: LIGHT AND SOUND SECTION ONE: Sound SLO 01: Describe how sound is generated and how sound travels through air A sound wave is created when an object vibrates and causes the air around it ... jingying.foong
C7. Sound - Notes from MM Sound Waves Characteristics of Sound Produced when a body vibrates and the waves reaches us through the vibrations of the particles of the surrounding medium Agy George
Physical Science Lesson 3 Sound is a form of energy that’s produced when waves are created by certain kinds of vibrations. A vibration is defined as the periodic motion of particles. Sound can also refer to the sensations produc... Makenzieanne Wygans
Sound Notes How We HearAll sounds come from vibrations.1. An object exp. Cymbals makes a sound by vibrating.2. The vibrations pass through air by making air particles vibrate.3. These vibrations make your ear drum vibrate.4. Then... maximepans101
lasers Lasers produce narrow, intense beams of monochromatic light.Ordinary visible light is a combination of waves of different frequency and wave length (and so colour) that are ‘out of phases’ meaning the crests and troug... Tom Pass
The Doppler Effect - Example 1 Stationary Observer, Moving Source A Garda car is speeding towards the scene of the crime at 70m/s with its siren blaring at 2000Hz. At what frequency do you hear the siren at when it's approaching, and when it has pa... ed.wilson89
The Doppler Effect - Example 3 Moving source and moving observer A bat emits ultrasonic waves with a frequency of 56 kHz, and the bat is travelling at 15m/s. If the bat is travelling towards a moth that is flying away at 5m/s, what frequency would ... ed.wilson89
The Doppler Effect - Example 2 Stationary source, moving observer A pupil is running towards school at 5m/s as they are late. The bell sounds at a frequency of 350 Hz. What frequency does the pupil hear the bell at? Take the speed of sound in ... ed.wilson89
SOUND AND LIGHT Laurita:)
Untitled How sound waves are produced1.  Your muscles push air form your lungs and through the narrow opening between the vocal chords.2. The force of the air causes the vocal chords to vibrate.3. The vibrating vocal chor... zahruzuby
microphones and sound outputs Microphones and sound input When sound reaches the microphone, the diaphragm vibrates backwards and forwards    enjoy a film at the cinema or hear a friend’s voice over the phone. In order to translate an el... microphones and output devices
Chapter 16: Transfer of Sound Energy Through Vibrations Chapter 16: Transfer of Sound Energy Through Vibrations Sound is a vibration that travels through a medium (singular) / media (plural). Sound is all around us. The movement of objects creates vibrations, thus creating... TCH
Light & Sound Lesson 1Light travels from a luminous source in straight lines. Unlike most waves, light can travel to a vacuum, a space with no matter in it. When light hits an object, it can either be absorbed, reflected, or transm... Celestine Wenardy
Wavelength Wavelength is the distance between the peaks of a wave. All sound is waves, so all sound has a wavelength. Wavelength is inversely related to frequency: As the distance between peaks increases, the number of peaks in ... Joseph Fisher
The Doppler Effect - The Sound Barrier Breaking the sound barrier When an object travels at the speed of sound in that medium, - v = vs - it is said to be travelling at mach 1 When this happens, the observer doesn't hear anything until the source arrives ed.wilson89
Hearing and Sound - created from Mind Map What is Sound? How does Sound Travel? How is Sound Produced? W We
Sound Waves - Resonance Resonance Every object has a natural or fundamental requency This is the frequency at which an object vibrates when it is struck or plucked - for example a guitar string ed.wilson89
Sound Waves - The Decibel Scale ed.wilson89
8L Sound - created from Mind Map Sound energy is a form of energy Vibrations or oscillations are repeating fast backwards and forwards motions Sound energy is kinetic energy from vibrations which is transformed into sound energy goannaht0803
Sound and frequency Loud Quiet High pitch Alex Scaife

More Sound and Acoustics resources

All Sound and Acoustics resources Quizzes 37 Mind maps 103 Flashcards 130

About sound and acoustics notes

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Using Sound and Acoustics notes

Notes give you room to follow an explanation at your own pace. Sound Notes is a useful starting point for studying how vibrations reach the ear. For a broader summary, Light & Sound Summary also describes how sound is generated and travels through air.

When you are ready to work through a calculation, look at the Doppler effect examples. They cover a moving source, a moving observer, and a situation where both are moving. Compare what changes between the examples before working through each one yourself.

Move between formats

Use Sound Waves - Resonance to study natural frequency, or the decibel scale note to look at sound intensity. After reading, write down the points you want to remember without looking at the note. Switch to a quiz on the unit page when you want to check your understanding, or use a mind map to see how ideas connect.

Pick a note and explore it alongside another format.

Frequently asked questions

Which note is a good place to start?

Sound Notes is a useful starting point if you want to follow how sound reaches the ear. Light & Sound Summary is another option: its sound section describes how sound is generated and travels through air, alongside material on light.

Do the notes include Doppler effect examples?

Yes. The page lists worked examples involving a moving source, a moving observer, and a source and observer both in motion. There is also a note on the sound barrier. Together, they offer different situations to look at after studying the basics of sound.

Are these notes free to use?

Yes. Every note listed here is free to open and study without an account. The notes were made by GoConqr users, rather than by GoConqr. A free account also lets you save quiz scores and make your own quizzes, mind maps, flashcards and notes.