P ROPERTIES AND D ETECTION OF S OUND Waves 2011-2012.

Slides:

Advertisements

Similar presentations

Advertisements

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

Waves Openers Mrs. V Science A. Crest, B. Wavelength, C. Trough, D. Amplitude

All sounds are produced by the vibration of matter. If there is no vibration, there is no sound.

Ch. 17 – Mechanical Waves & Sound

Dr. Jie ZouPHY Chapter 20 Sound The physicist usually takes the objective position and defines sound as a form of energy that exists whether or not.

Phy 202: General Physics II Ch 16: Waves & Sound Lecture Notes.

Dr. Jie Zou PHY 1151G Department of Physics1 Chapter 14 Waves and Sound.

SOUND WAVE PROPERTIES Sound longitudinal Sound is a longitudinal (Mechanical)wave caused by a vibrating object Molecules collide, producing sound Examples:

Physical Science Waves and Sound Lincoln High School Mr. Lowery Earth Science (slightly modified for Integrated Science: Ms. Gall 2011)

Waves / Sound Physics. Waves Wave motion is the means of transferring energy through a medium without the material itself moving along with the energy.

C HAPTER 16 S OUND Nuay, Emmanuel Barquila, Rae Angelo Delos Reyes, Remjun.

Sound Waves. Sound is a Longitudinal Wave particles vibrate parallel to the direction of the motion of the wave.

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.

When something moves back and forth, up and down, or side to side we say it vibrates. A vibration is a wiggle. When this wiggle moves through space and.

Unit 10: Sound.

Characteristic Review and Propagation

13.1 Sound Waves pp Essential Questions  How do we perceive sound?  What conditions change the way in which we perceive sound?

Making Sound a longitudinal wave produced when matter vibrates – this in turn, causes the medium in which it is in to vibrate ex: tuning fork (the matter)

Sound. Sound Moves in 3 Dimensions Sound Basics Sound – A wave of energy created by vibrating objects that travels through a medium Origin – vibrating.

Chapter 12 Sound Hr Physics. Sound  Vibrations in matter. No one need be around to hear it.  Composed of Compressions & Rarefactions.  Compressions.

Sound Ch 13.1 – 13.2.

Sound   Introduction   Longitudinal waves with regions of high and low pressure that travel through a medium   Audible, Infrasonic, Ultrasonic 

Sound. A sound is produced by the initiation of a succession of compressive and rarefactive disturbances in a medium capable of transmitting these vibrational.

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

Chapter 12-1 Sound Waves. A sound is a vibration. The vibrating causes the air molecules near the movement to be forced closer. This is called compression.

Sound 13-1 A “physical phenomenon that stimulates the sense of hearing.”

Sound Waves You Have to Hear This!!!!.

The production of sound Waves always begin with A vibrating object.

Section 1 Section 2Section 3Section 4Chapter 2.

Chapter 21 - The Nature of Sound. Sound is produced by ________________ which are the complete _____________________ motion of an object Sound travels.

Periodic Motion Common Example: Pendulum Some elements of periodic motion we can describe –Oscillation or Cycle –Period, T –Frequency, f –Amplitude, A.

Types of Waves and Wave Properties. Mechanical Waves What is a mechanical wave? A rhythmic disturbance that allows energy to be transferred through matter.

26.1 The Origin of Sound What is the source of all sound?

Waves. Wave Motion A wave travels along its medium, but the individual particles just move up and down.

1© Manhattan Press (H.K.) Ltd Nature of sound waves.

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.

The Nature of Sound. Sound is Longitudinal  Longitudinal wave or compression wave  Compression vs. rarefaction  Longitudinal wave or compression wave.

Chapter 12 Section 2. Amplitude Amplitude of a sound wave indicates the amount of energy in the wave Longitudinal wave’s amplitude is the tightness of.

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

Mechanical Waves Wave Characteristics Say What?! Wave Examples Vocabulary $ $ $ $ $ $ $ $ $ $

Physics Section 11.3 Apply the properties of waves A wave is a periodic disturbance that transfers energy by the vibration of matter, rather than the transfer.

Ch 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.

Waves transmit energy but not matter.

AP Physics Review Waves and Sound.

Chapter 26: Sound.

Conceptual Physics Notes on Chapter 26 Sound.

Unit 1.3 Sound.

Chapter 17: Mechanical Waves & Sound

Sound and Hearing it.

Chapter 12 Sound.

Ch. 12 Waves pgs

Vibrations through a medium

Sound and HOW WE Hear it.

Sound Sound waves are longitudinal waves because the vibrations of air molecules is parallel to the direction of wave motion. Look at tuning fork – as.

The Nature of Sound Physics Chapter 16A.

Sound Chapter 15.

Friday, Resonance gone bad!

Chapter 12, Section 2 Properties of Sound

Sound and Hearing it.

Presentation transcript:

P ROPERTIES AND D ETECTION OF S OUND Waves

S OUND Sound is caused by the vibration of a medium. Your voice results from a vibration of your vocal chords. The sound of a violin is produced by the vibration of strings. Sound cannot propagate through a vacuum!

W HAT K IND OF W AVE IS S OUND Sound is a mechanical wave – It results from particle- to-particle interaction. Sound is a longitudinal wave – The particles move along the direction of the wave. Sound is a pressure wave – It has regions of compression and rarefaction.

S OUND W AVE D EFINITIONS Pitch – our subjective impression of the frequency of sound Infrasonic – sound waves with frequencies below 20 Hz Ultrasonic – sound waves with frequencies above 20,000 Hz Compression – region of high pressure Rarefaction – region of low pressure

T HE D OPPLER E FFECT The apparent change in frequency due to the motion of the source (or receiver). The greater the speed of the source (or receiver), the greater the Doppler effect.