Ch. 26. 1. Sound waves are produced by vibrations of material objects 2. Pitch is the frequency of a sound wave 3. Average range of hearing is 20-20,000.

Slides:

Advertisements

Similar presentations

Chapter 20 Sound.

Advertisements

SOUND.

CP Physics Ms. Morrison.  Mechanical – needs medium  Longitudinal  Created by vibrations which disturb the medium and transmit the wave energy  Sound.

Waves, Electromagnetic Waves, Light, and Sound. Waves is a disturbance moves through a medium from one location to another location A medium is a substance.

Why it’s important: Human communication relies on cords vibrating in throats to send waves through gas, liquids, and solids that end up as electrical.

Chapter 26 SOUND All Sounds are produced by the vibrations of material objects.

Important Terms Chapter 26 April 21, Important Concepts Sound Transmission (What is Needed?) – A source of vibration – A Medium to transport the.

Chapter Review. Ch. 11 page , 4, 7, 8, 12, 14, 16, 19, 21, 23-25, 31, 32, 35, 37, 41, Oscillation about an equilibrium position in.

Sound Origin of Sound Nature of Sound in Air Media that Transmit Sound

Big Idea: A form of ENERGY that spreads throughout space.

Sound BY MaryAnn Cavazos, Jeremy Massari, Brianna Boyer, Alex Traeger, Devon Gregory.

Anything that vibrates generates a sound! (unless it’s in a vacuum)

Chapter 15 - Sound Sound wave is a longitudinal wave.

ALL sounds are produced by vibrations. Sound waves travel as longitudinal (compressional) waves. Compression – region of high molecular density and.

Like all waves, sound waves are produced by a vibration.  A tuning fork vibrates to produce a sound.  A guitar string vibrates to produce a sound.

Sound Overview The Facts of Sound The Ear and Sound Sound Vocabulary Musical Instruments and Sound.

Unit 10: Sound.

Conceptual Physics Notes on Chapter 25 Sound. Sound   All sounds are produced by the vibrations of material objects.   Pitch describes our impressions.

Chapter 12 Sound.

Sound. Imagine an entire room is filled with ping pong balls, and in the middle of the room is a big paddle. Shake the paddle and observe what happens:

Sound Physics. Sound Source All sounds are produced by the vibrations of material objects The frequency of sounds is often described by the word pitch.

Sound and the Doppler Effect. Sound is a Mechanical Wave What is a mechanical wave? A mechanical wave is any wave that needs a medium.

SOUND WAVES & BEAT FREQUENCY. SOUND WAVES Sound waves are caused by vibrations Vibrations cause contraction and expansion of an object, which creates.

Sound! Speed of Sound: in air at 0°C, sound travels at m/s (~760 mi/hr). When air is _____, the molecules move faster, and so sound travels more.

Chapter 26 Sound. Sound is a form of energy that spreads out through space.

Section 1 Section 2Section 3Section 4Chapter 2.

Chapter 26 Review Applied Physics. Vocabulary Your vocabulary assessment will consist of matching words and definitions. Your vocabulary assessment will.

Chapter 26: Sound. The Origin of Sound  All sounds are produced by the vibrations of material objects  Pitch – our subjective impression of sound 

Chapter Review Game. Amplitude: tells us how much energy a wave has.

Sound Sound is a form of energy that spreads out through a medium.

Sound. All sounds are produced by the vibrations of material objects They are compressional waves carried by a medium (air, water, solid) The molecules.

The Nature of Sound Sound waves are produced by the vibrations of matter. In most cases, the original vibration (string, reed mouthpiece, vocal chords)

Sound. The origin of sound All sound are produced by the vibrations of material objects. Our voice results from the vibration of our vocal chords. Sound.

Bell Ringer What causes sound?. Bell Ringer Explain one station from yesterday. How did length affect pitch? How did sound travel through different materials?

The Nature of Sound and its Applications. Sound is produced by vibrations Sound is a compression(longitudinal) wave.

Vibrations through a medium Sound. oAll sounds are produced by the vibrations of material objects. PITCH = The impression about the frequency of a sound.

What is sound? Sound is a longitudinal wave which travels through the air through a series of compressions and rarefactions.

Which Wave Which Wave ? Mechanical wave motion requires a material MEDIUM. Ripple waves are formed by the VIBRATION of water molecules.

Characteristics of waves.. The Nature of Waves What is a wave? A wave is a repeating disturbance or movement that transfers energy through matter or space.

Sound. Vocabulary Sound Wave Frequency Pitch Wavelength – The distance between two compressions or two rarefactions.

Sound. Characteristics Loudness --> Amplitude Pitch -->frequency.

~ Sound ~ The Nature of Sound  Speed of Sound  Human hearing  Doppler effect  “Seeing” with sound.

AP Physics Review Waves and Sound.

Sound Wave Interactions

Chapter 26: Sound.

Conceptual Physics Notes on Chapter 26 Sound.

a. A wave is a disturbance that transfers energy from place to place.

Waves & Sound A. Waves 1. The nature of waves

SOUND a range of compression wave frequencies to which the

Waves & Sound A. Waves 1. The nature of waves

Vibrations through a medium

Physical Science Force

Waves & Sound A. Waves 1. The nature of waves

Sound and Music Chapters 20 and 21.

Sound Chapter 15.

Conceptual Physics Notes on Chapter 26 Sound.

Chapter 21: Sound.

Sound Chapter 11.

Sound Chapter 26.1 – 26.4.

Sound: The Science of Music

Presentation transcript:

Ch. 26

1. Sound waves are produced by vibrations of material objects 2. Pitch is the frequency of a sound wave 3. Average range of hearing is 20-20,000 Hz. 4. Infrasonic sounds occur at frequencies less than 20 Hz; Ultrasonic sounds occur at frequencies above 20,000 Hz.

5. a)The compression is the high pressure or more dense region of the sound wave; the rarefaction is the low pressure or less dense region of the sound wave. b)The original pulse pushes the matter together (compression) and when the matter moves backwards producing a low density region behind (rarefaction)

6. Sound is a mechanical wave and requires a medium to travel through. So sound waves cannot travel through a vacuum. 7. a) 340 m/s b) an increase in temperature will increase the speed of sound. 8. The speed of sound in air is much slower that in water or steel. 9. Sound travels faster in solids and liquids because the molecules are closer together and transfer energy more rapidly.

10. Intensity is objective and is a measured by instruments, loudness is relative to the sensation sensed in the brain, so it is subjective, but is related to intensity. 11. Different objects make different sounds because each exhibit different sets of natural frequencies when vibrating. 12. It means that differing compositions vibrate naturally in a specific characteristic way. 13. The sounding board is forced to vibrate by the vibrating source, which causes the sound to be amplified (more air molecules are set vibrating creating a louder sound)

14. A forced vibration causes an object to vibrate at that frequency, but unless the forced vibration matches the natural frequency of the object, resonance cannot occur. 15. A tissue is too limp to rebound and continue to vibrate 16. Resonance occurs when the vibration from one object matches the natural frequency of another object causing the vibrations in the second object to build in amplitude over repeated vibrations.

17. The tuner on a radio station allows the receiver to resonate to the incoming signal by adjusting the natural frequency of the radio to the desired station. 18. Yes. Sound waves can destructively interfere. 19. If the path lengths differ by ½ wavelength, then the

20. Beats occur when sound waves of slightly differing frequencies interfere constructively and destructively, producing a regular fluctuation that sounds louder and softer. 21. The beat frequency is 2 Hz (496 Hz Hz).