Sound Waves SOUND VIBRATIONS THAT TRAVEL THROUGH THE AIR OR OTHER MEDIA WHEN THESE VIBRATIONS REACH THE AIR NEAR YOUR EARS YOU HEAR THE SOUND.

Size: px
Start display at page:

Download "Sound Waves SOUND VIBRATIONS THAT TRAVEL THROUGH THE AIR OR OTHER MEDIA WHEN THESE VIBRATIONS REACH THE AIR NEAR YOUR EARS YOU HEAR THE SOUND."

Transcription

1 SOUND WAVES

2 Objectives: 1. WHAT IS SOUND? 2. HOW DO SOUND WAVES TRAVEL? 3. HOW DO PHYSICAL PROPERTIES OF A MEDIUM AFFECT THE SPEED OF SOUND WAVES? 4. WHAT PROPERTIES OF WAVES AFFECT WHAT WE HEAR? 5. WHAT IS THE DOPPLER EFFECT?

3 SOUND VIBRATIONS THAT TRAVEL THROUGH THE AIR OR OTHER MEDIA WHEN THESE VIBRATIONS REACH THE AIR NEAR YOUR EARS YOU HEAR THE SOUND.

4 HOW SOUND TRAVELS SOUND WAVES CARRY ENERGY THROUGH A MEDIUM (SOLID, LIQUID OR GAS) WITHOUT THE PARTICLES OF THE MEDIUM TRAVELING ALONG. Sound travels as a longitudinal wave.

5 HOW SOUNDS ARE MADE LONGITUDINAL WAVES ARE GENERATED WHEN A SOURCE OF ENERGY FORCES THE MATTER IN A MEDIUM TO VIBRATE. THIS BACK-AND-FORTH MOTION PUSHES AIR PARTICLES TOGETHER, GENERATING A COMPRESSION, OR MOVES THE PARTICLES APART, GENERATING A RAREFACTION. Compression Rarefaction

6 MEDIUM SOUND WAVES MUST HAVE A MEDIUM TO TRAVEL THROUGH. GAS AIR IS THE MOST COMMON LIQUID SOLID IN OUTER SPACE THERE ARE NO MOLECULES TO COMPRESS OR RAREFY, SO SOUND DOES NOT TRAVEL THROUGH OUTER SPACE.

7 SPEED OF SOUND DEPENDS ON THE PHYSICAL PROPERTIES OF THE MEDIUM IT TRAVELS THROUGH. ELASTICITY DENSITY TEMPERATURE AT ROOM TEMPERATURE, SOUND TRAVELS THROUGH AIR AT ABOUT 342M/S. Speed of Sound Medium Speed(m/s) Gases Air (0 o C) 330 Air (20 o C) 342 Liquids Fresh water 1,490 Salt water 1,530 Solids (25 o C) Hard wood 4,000 Glass 4,540 Steel 5,200

8 PHYSICAL PROPERTIES OF MEDIA ELASTICITY THE ABILITY OF A MATERIAL TO BOUNCE BACK AFTER BEING DISTURBED SOLID MATERIALS ARE USUALLY MORE ELASTIC THAN LIQUIDS OR GASES. PARTICLES OF A SOLID DO NOT MOVE VERY FAR, SO THEY BOUNCE BACK AND FORTH QUICKLY AS THE VIBRATION TRAVELS THROUGH THE OBJECT, WHICH ALLOWS WAVES TO MOVE FASTER. Distance traveled in 1 sec. Solid Liquid Gas

9 PHYSICAL PROPERTIES OF MEDIA (CONT.) DENSITY HOW MUCH MATTER THERE IS IN A GIVEN AMOUNT OF SPACE THE SPEED OF SOUND DEPENDS ON HOW CLOSE TOGETHER THE PARTICLES OF THE SUBSTANCE ARE IN THE MEDIUM. Gas Liquid Speed of Sound Medium Speed(m/s) Density Air 342 Fresh water 1,490 Solid Least dense Steel 5,200 Most dense

10 PHYSICAL PROPERTIES OF MEDIA (CONT.) TEMPERATURE - DEGREE OR INTENSITY OF HEAT PRESENT IN A SUBSTANCE OR OBJECT IN A GIVEN MEDIA (SOLID, LIQUID, GAS), SOUND TRAVELS MORE SLOWLY AT LOWER TEMPERATURES. Air Temperature ( o C) Speed (m/s)

11 PROPERTIES OF SOUND WAVES INTENSITY LOUDNESS FREQUENCY PITCH

12 PROPERTIES OF SOUND WAVES INTENSITY THE AMOUNT OF ENERGY THE WAVE CARRIES PER SECOND THROUGH A UNIT OF AREA AMPLITUDE INCREASES WITH INCREASED ENERGY MEASURED IN WATTS PER SQUARE METER (W/M 2 )

13 PROPERTIES OF SOUND WAVES (CONT.) LOUDNESS DESCRIBES WHAT YOU ACTUALLY HEAR. THOUGH NOT THE SAME AS LOUDNESS, THE GREATER THE INTENSITY OF A SOUND WAVE, THE LOUDER IT IS. MEASURED IN DECIBELS (DB) MAXIMUM SAFE LEVEL IS 85 DB

14 PROPERTIES OF SOUND WAVES (CONT.) FREQUENCY THE NUMBER OF VIBRATIONS THAT OCCUR PER SECOND WAVELENGTH CHANGES WITH FREQUENCY MEASURED IN HERTZ (HZ) 50HZ = 50 VIBRATIONS PER SECOND Which wave has the greatest frequency?

15 PROPERTIES OF SOUND WAVES (CONT.) PITCH A DESCRIPTION OF HOW HIGH OR LOW THE SOUND SEEMS TO A PERSON HIGH FREQUENCY = HIGH PITCH LOW FREQUENCY = LOW PITCH EXAMPLE: A YOUNG GIRL MIGHT HAVE A SQUEAKY (HIGH PITCHED) VOICE, AN OLDER MAN MIGHT HAVE A DEEP (LOW PITCHED) VOICE

16 DOPPLER EFFECT THE APPARENT CHANGE IN FREQUENCY AS A WAVE SOURCE MOVES IN RELATION TO THE LISTENER SOUNDS MOVING TOWARD A PERSON WAVES ARE AT A HIGHER FREQUENCY, SO PITCH APPEARS TO INCREASE (HIGH) SOUND MOVING AWAY FROM A PERSON WAVES ARE AT A LOWER FREQUENCY, SO PITCH APPEARS TO DECREASE (LOW)

Producing a Sound Wave. Chapter 14. Using a Tuning Fork to Produce a Sound Wave. Using a Tuning Fork, cont.

Producing a Sound Wave. Chapter 14. Using a Tuning Fork to Produce a Sound Wave. Using a Tuning Fork, cont. Producing a Sound Wave Chapter 14 Sound Sound waves are longitudinal waves traveling through a medium A tuning fork can be used as an example of producing a sound wave Using a Tuning Fork to Produce a

More information

How can we model sound waves?

How can we model sound waves? Guiding Question How can we model sound waves? Activity 2: Making Sound 1 Key Vocabulary Key Vocabulary } audiogram } compression } frequency } function } hertz } pattern } rarefaction } sound intensity

More information

The Nature of Sound Waves

The Nature of Sound Waves The Nature of Sound Waves Read from Lesson 1 of the Sound and Music chapter at The Physics Classroom: http://www.physicsclassroom.com/class/sound/u11l1a.html http://www.physicsclassroom.com/class/sound/u11l1b.html

More information

Nicholas J. Giordano. Chapter 13 Sound

Nicholas J. Giordano.  Chapter 13 Sound Nicholas J. Giordano www.cengage.com/physics/giordano Chapter 13 Sound Sound Sounds waves are an important example of wave motion Sound is central to hearing, speech, music and many other daily activities

More information

SIMPLE HARMONIC MOTION AND WAVES

SIMPLE HARMONIC MOTION AND WAVES Simple Harmonic Motion (SHM) SIMPLE HARMONIC MOTION AND WAVES - Periodic motion any type of motion that repeats itself in a regular cycle. Ex: a pendulum swinging, a mass bobbing up and down on a spring.

More information

Homework #4 Reminder Due Wed. 10/6

Homework #4 Reminder Due Wed. 10/6 Homework #4 Reminder Chap. 6 Concept: 36 Problems 14, 18 Chap. 8 Concept: 8, 12, 30, 34 Problems 2, 10 Due Wed. 10/6 Chapter 8: Wave Motion A wave is a sort of motion But unlike motion of particles A propagating

More information

Work. Work and Energy Examples. Energy. To move an object we must do work Work is calculated as the force applied to the object through a distance or:

Work. Work and Energy Examples. Energy. To move an object we must do work Work is calculated as the force applied to the object through a distance or: Work To move an object we must do work Work is calculated as the force applied to the object through a distance or: W F( d) Work has the units Newton meters (N m) or Joules 1 Joule = 1 N m Energy Work

More information

Chapter 8: Wave Motion. Homework #4 Reminder. But what moves? Wave properties. Waves can reflect. Waves can pass through each other

Chapter 8: Wave Motion. Homework #4 Reminder. But what moves? Wave properties. Waves can reflect. Waves can pass through each other Homework #4 Reminder Chap. 6 Concept: 36 Problems 14, 18 Chap. 8 Concept: 8, 12, 30, 34 Problems 2, 10 Chapter 8: Wave Motion A wave is a sort of motion But unlike motion of particles A propagating disturbance

More information

Page # Physics 103: Lecture 26 Sound. Lecture 26, Preflight 2. Lecture 26, Preflight 1. Producing a Sound Wave. Sound from a Tuning Fork

Page # Physics 103: Lecture 26 Sound. Lecture 26, Preflight 2. Lecture 26, Preflight 1. Producing a Sound Wave. Sound from a Tuning Fork Physics 103: Lecture 6 Sound Producing a Sound Wave Sound waves are longitudinal waves traveling through a medium A tuning fork can be used as an example of producing a sound wave A tuning fork will produce

More information

What does the speed of a wave depend on?

What does the speed of a wave depend on? Today s experiment Goal answer the question What does the speed of a wave depend on? Materials: Wave on a String PHeT Simulation (link in schedule) and Wave Machine Write a CER in pairs. Think about the

More information

Sound Waves. Sound waves are longitudinal waves traveling through a medium Sound waves are produced from vibrating objects.

Sound Waves. Sound waves are longitudinal waves traveling through a medium Sound waves are produced from vibrating objects. Sound Waves Sound waves are longitudinal waves traveling through a medium Sound waves are produced from vibrating objects Introduction Sound Waves: Molecular View When sound travels through a medium, there

More information

Learning Goal: By the end of today, I will be familiar with the following concepts: Demo Newton's Cradle Tuning Forks. Section 8.

Learning Goal: By the end of today, I will be familiar with the following concepts: Demo Newton's Cradle Tuning Forks. Section 8. Section 8.1 Vibrations Learning Goal: By the end of today, I will be familiar with the following concepts: Vibrations and Mechanical waves The cyclical motion about an equilibrium point is called a vibration.

More information

Wave Motions and Sound

Wave Motions and Sound EA Notes (Scen 101), Tillery Chapter 5 Wave Motions and Sound Introduction Microscopic molecular vibrations determine temperature (last Chapt.). Macroscopic vibrations of objects set up what we call Sound

More information

Chapter 20: Mechanical Waves

Chapter 20: Mechanical Waves Chapter 20: Mechanical Waves Section 20.1: Observations: Pulses and Wave Motion Oscillation Plus Propagation Oscillation (or vibration): Periodic motion (back-and-forth, upand-down) The motion repeats

More information

Matter and Sound. UNIT 8 Student Reader. E5 Student Reader v. 9 Unit 8 Page KnowAtom TM

Matter and Sound. UNIT 8 Student Reader. E5 Student Reader v. 9 Unit 8 Page KnowAtom TM Matter and Sound UNIT 8 Student Reader E5 Student Reader v. 9 Unit 8 Page 1 2017 KnowAtom TM Front Cover: The front cover shows a photograph of three students practicing in a band. E5 Student Reader v.

More information

Exercises The Origin of Sound (page 515) 26.2 Sound in Air (pages ) 26.3 Media That Transmit Sound (page 517)

Exercises The Origin of Sound (page 515) 26.2 Sound in Air (pages ) 26.3 Media That Transmit Sound (page 517) Exercises 26.1 The Origin of (page 515) Match each sound source with the part that vibrates. Source Vibrating Part 1. violin a. strings 2. your voice b. reed 3. saxophone c. column of air at the mouthpiece

More information

Lecture 18. Waves and Sound

Lecture 18. Waves and Sound Lecture 18 Waves and Sound Today s Topics: Nature o Waves Periodic Waves Wave Speed The Nature o Sound Speed o Sound Sound ntensity The Doppler Eect Disturbance Wave Motion DEMO: Rope A wave is a traveling

More information

42 TRAVELING WAVES (A) (B) (C) (D) (E) (F) (G)

42 TRAVELING WAVES (A) (B) (C) (D) (E) (F) (G) 42 TRAVELING WAVES 1. Wave progagation Source Disturbance Medium (D) Speed (E) Traveling waves (F) Mechanical waves (G) Electromagnetic waves (D) (E) (F) (G) 2. Transverse Waves have the classic sinusoidal

More information

due to striking, rubbing, Any vibration of matter spinning, plucking, etc. Find frequency first, then calculate period.

due to striking, rubbing, Any vibration of matter spinning, plucking, etc. Find frequency first, then calculate period. Equilibrium Position Disturbance Period (T in sec) # sec T = # cycles Frequency (f in Hz) f = # cycles # sec Amplitude (A in cm, m or degrees [θ]) Other Harmonic Motion Basics Basic Definitions Pendulums

More information

the ability to do work or cause change (work is force exerted on an object causing it to move a distance)

the ability to do work or cause change (work is force exerted on an object causing it to move a distance) Vocabulary Terms - Energy energy the ability to do work or cause change (work is force exerted on an object causing it to move a distance) heat Heat is a form of energy that flows between two substances

More information

Decibels and Acoustical Engineering

Decibels and Acoustical Engineering Decibels and Acoustical Engineering What is Sound? Sound is the movement of energy through substances in longitudinal (compression/rarefaction) waves. Sound is produced when a force causes an object or

More information

3 THE P HYSICS PHYSICS OF SOUND

3 THE P HYSICS PHYSICS OF SOUND Chapter 3 THE PHYSICS OF SOUND Contents What is sound? What is sound wave?» Wave motion» Source & Medium How do we analyze sound?» Classifications» Fourier Analysis How do we measure sound?» Amplitude,

More information

Physics Mechanics. Lecture 34 Waves and sound II

Physics Mechanics. Lecture 34 Waves and sound II 1 Physics 170 - Mechanics Lecture 34 Waves and sound II 2 Sound Waves Sound waves are pressure waves in solids, liquids, and gases. They are longitudinal in liquids and gases, and may have transverse components

More information

Energy - the ability to do work or cause change. 1 point

Energy - the ability to do work or cause change. 1 point Energy and Waves Energy - the ability to do work or cause change Work - the transfer of energy Work = Force X Distance Power - the rate at which work is done Power = Work Time Kinetic Energy - the energy

More information

Chapter 2 SOUND WAVES

Chapter 2 SOUND WAVES Chapter SOUND WAVES Introduction: A sound wave (or pressure or compression wave) results when a surface (layer of molecules) moves back and forth in a medium producing a sequence of compressions C and

More information

Origin of Sound. Those vibrations compress and decompress the air (or other medium) around the vibrating object

Origin of Sound. Those vibrations compress and decompress the air (or other medium) around the vibrating object Sound Each celestial body, in fact each and every atom, produces a particular sound on account of its movement, its rhythm or vibration. All these sounds and vibrations form a universal harmony in which

More information

Physics 207 Lecture 28

Physics 207 Lecture 28 Goals: Lecture 28 Chapter 20 Employ the wae model Visualize wae motion Analyze functions of two ariables Know the properties of sinusoidal waes, including waelength, wae number, phase, and frequency. Work

More information

1.32 Sound Waves. Chapter 1. Energy

1.32 Sound Waves.  Chapter 1. Energy 1.32 Sound Waves Define sound. Describe sound waves and how they are generated. Identify media through which sound waves can travel. Crack! Crash! Thud! That s what you d hear if you were in the forest

More information

1. How does the sound produced by a vibrating object in a medium reach your ear?

1. How does the sound produced by a vibrating object in a medium reach your ear? 1. How does the sound produced by a vibrating object in a medium reach your ear? The vibrating object produces a series of compressions and rarefactions, one after the other in the medium. These pulses

More information

Thermodynamics continued

Thermodynamics continued Chapter 15 Thermodynamics continued 15 Work The area under a pressure-volume graph is the work for any kind of process. B Pressure A W AB W AB is positive here volume increases Volume Clicker Question

More information

General Physics (PHY 2130)

General Physics (PHY 2130) General Physics (PHY 2130) Lecture XII Sound sound waves Doppler effect Standing waves Light Reflection and refraction Lightning Review Last lecture: 1. Vibration and waves Hooke s law Potential energy

More information

General Physics (PHY 2130)

General Physics (PHY 2130) General Physics (PHY 2130) Lecture XII Sound sound waves Doppler effect Standing waves Light Reflection and refraction http://www.physics.wayne.edu/~apetrov/phy2130/ Lightning Review Last lecture: 1. Vibration

More information

Name: Section: Forms of Energy Practice Test

Name: Section: Forms of Energy Practice Test Name: Section: Forms of Energy Practice Test Directions: For each of the questions or incomplete statements below, choose the best of the answer choices given and write your answer on the line. 1. What

More information

Unit 4 Parent Guide: Waves. What is a wave?

Unit 4 Parent Guide: Waves. What is a wave? Unit 4 Parent Guide: Waves What is a wave? A wave is a disturbance or vibration that carries energy from one location to another. Some waves require a medium to transmit the energy whereas others can travel

More information

Section 6: Waves. The following maps the videos in this section to the Texas Essential Knowledge and Skills for Physics TAC (c).

Section 6: Waves. The following maps the videos in this section to the Texas Essential Knowledge and Skills for Physics TAC (c). Section 6: Waves The following maps the videos in this section to the Texas Essential Knowledge and Skills for Physics TAC 112.39(c). 6.01 Classifications of Waves Physics (7)(A) Physics (7)(B) 6.02 Properties

More information

Physics Worksheet Sound and Light Section: Name:

Physics Worksheet Sound and Light Section: Name: Do Now: What is common between sound and light? What are the differences between sound and light? Sound Waves 1. Define Sound Waves from three different perspectives 6. Speed of sound =. Formula: v =.

More information

Chapter 16 Traveling Waves

Chapter 16 Traveling Waves Chapter 16 Traveling Waves GOALS When you have mastered the contents of this chapter, you will be able to achieve the following goals: Definitions Define each of the following terms as it is used in physics,

More information

Ch Guided Reading Sound and Light

Ch Guided Reading Sound and Light Name Date Hour Chapter 15 Answer Key Ch.15-18 Guided Reading Sound and Light 1. Compare the speed of sound as it travels within a liquid, a solid, and a gas. Why does the speed of sound differ? Sound travels

More information

SoundWaves. Lecture (2) Special topics Dr.khitam Y, Elwasife

SoundWaves. Lecture (2) Special topics Dr.khitam Y, Elwasife SoundWaves Lecture (2) Special topics Dr.khitam Y, Elwasife VGTU EF ESK stanislovas.staras@el.vgtu.lt 2 Mode Shapes and Boundary Conditions, VGTU EF ESK stanislovas.staras@el.vgtu.lt ELEKTRONIKOS ĮTAISAI

More information

Schedule for the remainder of class

Schedule for the remainder of class Schedule for the remainder of class 04/25 (today): Regular class - Sound and the Doppler Effect 04/27: Cover any remaining new material, then Problem Solving/Review (ALL chapters) 04/29: Problem Solving/Review

More information

Sample Pages from. Leveled Texts for Science: Physical Science

Sample Pages from. Leveled Texts for Science: Physical Science Sample Pages from Leveled Texts for Science: Physical Science The following sample pages are included in this download: Table of Contents Readability Chart Sample Passage For correlations to Common Core

More information

Waves PY1054. Special Topics in Physics. Coláiste na hollscoile Corcaigh, Éire University College Cork, Ireland. ROINN NA FISICE Department of Physics

Waves PY1054. Special Topics in Physics. Coláiste na hollscoile Corcaigh, Éire University College Cork, Ireland. ROINN NA FISICE Department of Physics Waves Special Topics in Physics 1 Waves Types of Waves: - longitudinal - transverse Longitudinal: Compression waves, e.g. sound Surface: Transverse: Attributes: Ocean Waves. Light, string etc. Speed, wavelength,

More information

Chapters 11 and 12. Sound and Standing Waves

Chapters 11 and 12. Sound and Standing Waves Chapters 11 and 12 Sound and Standing Waves The Nature of Sound Waves LONGITUDINAL SOUND WAVES Speaker making sound waves in a tube The Nature of Sound Waves The distance between adjacent condensations

More information

1. A wave is a traveling disturbance. 2. A wave carries energy from place to place.

1. A wave is a traveling disturbance. 2. A wave carries energy from place to place. v = fλ 1. A wave is a traveling disturbance. 2. A wave carries energy from place to place. Transverse Wave Longitudinal Wave How is a guitar made to create different notes/pitches/frequencies? A wave s

More information

Announcements 5 Dec 2013

Announcements 5 Dec 2013 Announcements 5 Dec 2013 1. Photo contest submissions due tomorrow night! 2. Online course evaluations due Sun, Dec. 15 http://studentratings.byu.edu Please take both the ratings and the comments seriously.

More information

Transverse wave - the disturbance is perpendicular to the propagation direction (e.g., wave on a string)

Transverse wave - the disturbance is perpendicular to the propagation direction (e.g., wave on a string) 1 Part 5: Waves 5.1: Harmonic Waves Wave a disturbance in a medium that propagates Transverse wave - the disturbance is perpendicular to the propagation direction (e.g., wave on a string) Longitudinal

More information

Sound. Extra Practice: C14.1, 14.1, 14.3, 14.5, 14.9, 14.11, 14.13, 14.15, 14.17, 14.19

Sound. Extra Practice: C14.1, 14.1, 14.3, 14.5, 14.9, 14.11, 14.13, 14.15, 14.17, 14.19 Sound Extra Practice: C14.1, 14.1, 14.3, 14.5, 14.9, 14.11, 14.13, 14.15, 14.17, 14.19 Reminders! WebAssign: Better your grade by requesting manual extensions on old assignments (50% recovery). Last homework:

More information

Unit 4 Waves and Sound Waves and Their Properties

Unit 4 Waves and Sound Waves and Their Properties Lesson35.notebook May 27, 2013 Unit 4 Waves and Sound Waves and Their Properties Today's goal: I can explain the difference between transverse and longitudinal waves and their properties. Waves are a disturbances

More information

Lecture 23 Sound Beats Sound Solids and Fluids

Lecture 23 Sound Beats Sound Solids and Fluids Lecture 23 Sound Beats Sound Solids and Fluids To round out our discussion of interference and waves, we should talk about beats. When you combine two waves (sound is a good example), if the frequencies

More information

TYPES OF WAVES. 4. Waves and Sound 1

TYPES OF WAVES. 4. Waves and Sound 1 TYPES OF WAVES Consider a set of playground swings attached by a rope from seat to seat If you sit in the first swing and begin oscillating, this disturbs the equilibrium The connecting ropes cause the

More information

2016 AP Physics Unit 6 Oscillations and Waves.notebook December 09, 2016

2016 AP Physics Unit 6 Oscillations and Waves.notebook December 09, 2016 AP Physics Unit Six Oscillations and Waves 1 2 A. Dynamics of SHM 1. Force a. since the block is accelerating, there must be a force acting on it b. Hooke's Law F = kx F = force k = spring constant x =

More information

PHYSICS. Chapter 16 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc.

PHYSICS. Chapter 16 Lecture FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E RANDALL D. KNIGHT Pearson Education, Inc. PHYSICS FOR SCIENTISTS AND ENGINEERS A STRATEGIC APPROACH 4/E Chapter 16 Lecture RANDALL D. KNIGHT 2017 Pearson Education, Inc. Chapter 16 Traveling Waves IN THIS CHAPTER, you will learn the basic properties

More information

CLASS 2 CLASS 2. Section 13.5

CLASS 2 CLASS 2. Section 13.5 CLASS 2 CLASS 2 Section 13.5 Simple Pendulum The simple pendulum is another example of a system that exhibits simple harmonic motion The force is the component of the weight tangent to the path of motion

More information

Chap 12. Sound. Speed of sound is different in different material. Depends on the elasticity and density of the medium. T v sound = v string =

Chap 12. Sound. Speed of sound is different in different material. Depends on the elasticity and density of the medium. T v sound = v string = Chap 12. Sound Sec. 12.1 - Characteristics of Sound Sound is produced due to source(vibrating object and travels in a medium (londitudinal sound waves and can be heard by a ear (vibrations. Sound waves

More information

3/9/2011. Outline Chapter 7 Waves Water Waves Water Waves. Water waves are really circular. They are an example of Mechanical waves.

3/9/2011. Outline Chapter 7 Waves Water Waves Water Waves. Water waves are really circular. They are an example of Mechanical waves. Outline Chapter 7 Waves 7-1. Water Waves 7-2. Transverse and Longitudinal Waves 7-3. Describing Waves 7-4. Standing Waves 7-5. Sound 7-6. Doppler Effect 7-7. Musical Sounds 7-8. Electromagnetic Waves 7-9.

More information

Chapter 6. Wave Motion. Longitudinal and Transverse Waves

Chapter 6. Wave Motion. Longitudinal and Transverse Waves Chapter 6 Waves We know that when matter is disturbed, energy emanates from the disturbance. This propagation of energy from the disturbance is know as a wave. We call this transfer of energy wave motion.

More information

Lecture 14 1/38 Phys 220. Final Exam. Wednesday, August 6 th 10:30 am 12:30 pm Phys multiple choice problems (15 points each 300 total)

Lecture 14 1/38 Phys 220. Final Exam. Wednesday, August 6 th 10:30 am 12:30 pm Phys multiple choice problems (15 points each 300 total) Lecture 14 1/38 Phys 220 Final Exam Wednesday, August 6 th 10:30 am 12:30 pm Phys 114 20 multiple choice problems (15 points each 300 total) 75% will be from Chapters 10-16 25% from Chapters 1-9 Students

More information

Physics General Physics. Lecture 25 Waves. Fall 2016 Semester Prof. Matthew Jones

Physics General Physics. Lecture 25 Waves. Fall 2016 Semester Prof. Matthew Jones Physics 22000 General Physics Lecture 25 Waves Fall 2016 Semester Prof. Matthew Jones 1 Final Exam 2 3 Mechanical Waves Waves and wave fronts: 4 Wave Motion 5 Two Kinds of Waves 6 Reflection of Waves When

More information

Announcements 2 Dec 2014

Announcements 2 Dec 2014 Announcements 2 Dec 2014 1. Prayer 2. Exam 3 going on a. Covers Ch 9-12, HW 18-24 b. Late fee on Wed Dec 3, 3 pm c. Closes on Thursday Dec 4, 3 pm 3. Photo contest submissions due Friday Dec 5, midnight

More information

Oscillations - AP Physics B 1984

Oscillations - AP Physics B 1984 Oscillations - AP Physics B 1984 1. If the mass of a simple pendulum is doubled but its length remains constant, its period is multiplied by a factor of (A) 1 2 (B) (C) 1 1 2 (D) 2 (E) 2 A block oscillates

More information

Waves Review Checklist Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one

Waves Review Checklist Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one 5.1.1 Oscillating Systems Waves Review Checklist 5.1.2 Pulses 5.1.1A Explain the relationship between the period of a pendulum and the factors involved in building one Four pendulums are built as shown

More information

Oscillation the vibration of an object. Wave a transfer of energy without a transfer of matter

Oscillation the vibration of an object. Wave a transfer of energy without a transfer of matter Oscillation the vibration of an object Wave a transfer of energy without a transfer of matter Equilibrium Position position of object at rest (mean position) Displacement (x) distance in a particular direction

More information

Test, Lesson 7 Waves - Answer Key Page 1

Test, Lesson 7 Waves - Answer Key Page 1 Test, Lesson 7 Waves - Answer Key Page 1 1. Match the proper units with the following: W. wavelength 1. nm F. frequency 2. /sec V. velocity 3. m 4. ms -1 5. Hz 6. m/sec (A) W: 1, 3 F: 2, 4, 5 V: 6 (B)

More information

VELOCITY OF SOUND. Apparatus Required: 1. Resonance tube apparatus

VELOCITY OF SOUND. Apparatus Required: 1. Resonance tube apparatus VELOCITY OF SOUND Aim : To determine the velocity of sound in air, with the help of a resonance column and find the velocity of sound in air at 0 C, as well. Apparatus Required: 1. Resonance tube apparatus

More information

Exam 3 Review. Chapter 10: Elasticity and Oscillations A stress will deform a body and that body can be set into periodic oscillations.

Exam 3 Review. Chapter 10: Elasticity and Oscillations A stress will deform a body and that body can be set into periodic oscillations. Exam 3 Review Chapter 10: Elasticity and Oscillations stress will deform a body and that body can be set into periodic oscillations. Elastic Deformations of Solids Elastic objects return to their original

More information

Sound Waves. Sound waves are caused by vibrations and carry energy through a medium

Sound Waves. Sound waves are caused by vibrations and carry energy through a medium Chapter 16 Sound Waves Sound waves are caused by vibrations and carry energy through a medium An example of a compressional wave Waves can spread out in all directions Their speed depends on its medium

More information

PHYS-2020: General Physics II Course Lecture Notes Section VIII

PHYS-2020: General Physics II Course Lecture Notes Section VIII PHYS-2020: General Physics II Course Lecture Notes Section VIII Dr. Donald G. Luttermoser East Tennessee State University Edition 4.0 Abstract These class notes are designed for use of the instructor and

More information

Saint Lucie County Science Scope and Sequence

Saint Lucie County Science Scope and Sequence Course: Physics 1 Course Code: 2003380 SEMESTER 2 QUARTER 3 UNIT 7 TOPIC of STUDY: Thermal Energy STANDARDS: 8:Matter, 10: Energy, 12: Motion KEY LEARNING: ~Mathematically relate heat, phase change, energy,

More information

Solids (cont.) Describe the movement of particles in a solid and the forces between them.

Solids (cont.) Describe the movement of particles in a solid and the forces between them. Solids A solid is matter that has a definite shape and a definite volume. The attractive forces between the particles in a solid are strong and pull them close together. Solids (cont.) Describe the movement

More information

Sound. Speed of Sound

Sound. Speed of Sound Sound TUNING FORK CREATING SOUND WAVES GUITAR STRING CREATING SOUND WAVES Speed of Sound Sound travels at a speed that depends on the medium through which it propagates. The speed of sound depends: - directly

More information

SOUND. Representative Sample Physics: Sound. 1. Periodic Motion of Particles PLANCESS CONCEPTS

SOUND. Representative Sample Physics: Sound. 1. Periodic Motion of Particles PLANCESS CONCEPTS Representative Sample Physics: Sound SOUND 1. Periodic Motion of Particles Before we move on to study the nature and transmission of sound, we need to understand the different types of vibratory or oscillatory

More information

Light, Energy and Waves

Light, Energy and Waves Light, Energy and Waves Transverse waves: Wave Types Waves in which the medium moves at right angles to the direction of the wave Compressional (or longitudinal) waves Waves in which the medium moves back

More information

Oscillations and Waves

Oscillations and Waves Oscillations and Waves Periodic Motion Simple Harmonic Motion Connections between Uniform Circular Motion and Simple Harmonic Motion The Period of a Mass on a Spring Energy Conservation in Oscillatory

More information

1. a) A flag waving in the breeze flaps once each s. What is the period and frequency of the flapping flag?

1. a) A flag waving in the breeze flaps once each s. What is the period and frequency of the flapping flag? PHYSICS 20N UNIT 4 REVIEW NAME: Be sure to show explicit formulas and substitutions for all calculational questions, where appropriate. Round final answers correctly; give correct units. Be sure to show

More information

Chapter 16. Waves and Sound

Chapter 16. Waves and Sound Chapter 16 Waes and Sound 16.1 The Nature of Waes 1. A wae is a traeling disturbance. 2. A wae carries energy from place to place. 16.1 The Nature of Waes Transerse Wae 16.1 The Nature of Waes Longitudinal

More information

Introduction to Acoustics. Phil Joseph

Introduction to Acoustics. Phil Joseph Introduction to Acoustics Phil Joseph INTRODUCTION TO ACOUSTICS Sound and Noise Sound waves Frequency, wavelength and wavespeed Point sources Sound power and intensity Wave reflection Standing waves Measures

More information

Question 01. A. Incorrect! The speed of sound is not the same in all medium; it is dependent on the properties of the material.

Question 01. A. Incorrect! The speed of sound is not the same in all medium; it is dependent on the properties of the material. High School Physics - Problem Drill 15: Sound 1. Which of these is not a true statement about sound waves? Question 01 (A) Sound waves are travel at different speeds in different mediums. (B) Sound waves

More information

Oscillations and Waves

Oscillations and Waves Oscillations and Waves Oscillation: Wave: Examples of oscillations: 1. mass on spring (eg. bungee jumping) 2. pendulum (eg. swing) 3. object bobbing in water (eg. buoy, boat) 4. vibrating cantilever (eg.

More information

NEW HORIZON SCHOOL WORKSHEETS TERM 2 SESSION [CLASS 9] Physics

NEW HORIZON SCHOOL WORKSHEETS TERM 2 SESSION [CLASS 9] Physics Physics GRAVITATION 1. Pascal is a unit of a) pressure b) force c) linear momentum d) energy 2. The buoyant force on a body acts in a a) vertically downward direction b) vertically upward direction c)

More information

jfpr% ekuo /kez iz.ksrk ln~xq# Jh j.knksm+nklth egkjkt

jfpr% ekuo /kez iz.ksrk ln~xq# Jh j.knksm+nklth egkjkt Phone : 93 93 7779, 9893 58881 Sount & Waves Page: 9 fo/u fopkjr Hkh# tu] ugha vkjehks dke] foifr ns[k NksM+s rqjar e/;e eu dj ';kea iq#"k flag ladyi dj] lgrs foifr vusd] ^cuk^ u NksM+s /;s; dks] j?kqcj

More information

Physics 140. Sound. Chapter 12

Physics 140. Sound. Chapter 12 Physics 140 Sound Chapter 12 Sound waves Sound is composed of longitudinal pressure waves. wave propagabon Compression Compression Compression è when parbcles come together RarefacBon RarefacBon RarefacBon

More information

Logarithmic Scales 37

Logarithmic Scales 37 37 When a physical quantity varies over a very large range, it is often convenient to take its logarithm in order to have a more manageable set of numbers. We discuss three such situations: the ph scale,

More information

Energy - Heat, Light, and Sound

Energy - Heat, Light, and Sound Energy - Heat, Light, and Sound Source: Utah State Office of Education A two-year-old has plenty of it, and the sun has a bunch of it. Do you know what it is? If not, let me give you a definition: A source

More information

4. What is the speed (in cm s - 1 ) of the tip of the minute hand?

4. What is the speed (in cm s - 1 ) of the tip of the minute hand? Topic 4 Waves PROBLEM SET Formative Assessment NAME: TEAM: THIS IS A PRACTICE ASSESSMENT. Show formulas, substitutions, answers, and units! Topic 4.1 Oscillations A mass is attached to a horizontal spring.

More information

Downloaded from

Downloaded from Chapter 15 (Waves) Multiple Choice Questions Single Correct Answer Type Q1. Water waves produced by a motorboat sailing in water are (a) neither longitudinal nor transverse (b) both longitudinal and transverse

More information

Chapter 8 Review, Understanding pages Knowledge

Chapter 8 Review, Understanding pages Knowledge Chapter 8 Review, pages 408 413 Knowledge 1. (b) 2. (c) 3. (d) 4. (a) 5. (c) 6. (b) 7. (c) 8. (a) 9. (b) 10. (d) 11. (d) 12. (c) 13. (a) 14. (a) (iv) (b) (ii) (c) (v) (d) (iii) (e) (i) 15. Answers may

More information

Wave Motion and Sound

Wave Motion and Sound Wave Motion and Sound 1. A back and forth motion that repeats itself is a a. Spring b. Vibration c. Wave d. Pulse 2. The number of vibrations that occur in 1 second is called a. A Period b. Frequency c.

More information

Quiz on Chapters 13-15

Quiz on Chapters 13-15 Quiz on Chapters 13-15 Final Exam, Thursday May 3, 8:00 10:00PM ANH 1281 (Anthony Hall). Seat assignments TBD RCPD students: Thursday May 3, 5:00 9:00PM, BPS 3239. Email will be sent. Alternate Final Exam,

More information

3 Properties of Waves:

3 Properties of Waves: 3 Properties of Waves: Including Light and Sound 1. General wave properties 2. Light 3. Sound 1. Which of the following is an example of transverse and a longitudinal wave? 4. A boy stands beside a girl

More information

Lecture 5 Notes: 07 / 05. Energy and intensity of sound waves

Lecture 5 Notes: 07 / 05. Energy and intensity of sound waves Lecture 5 Notes: 07 / 05 Energy and intensity of sound waves Sound waves carry energy, just like waves on a string do. This energy comes in several types: potential energy due to the compression of the

More information

Introduction to Audio and Music Engineering

Introduction to Audio and Music Engineering Introduction to Audio and Music Engineering Lecture 7 Sound waves Sound localization Sound pressure level Range of human hearing Sound intensity and power 3 Waves in Space and Time Period: T Seconds Frequency:

More information

CMPT 889: Lecture 3 Fundamentals of Digital Audio, Discrete-Time Signals

CMPT 889: Lecture 3 Fundamentals of Digital Audio, Discrete-Time Signals CMPT 889: Lecture 3 Fundamentals of Digital Audio, Discrete-Time Signals Tamara Smyth, tamaras@cs.sfu.ca School of Computing Science, Simon Fraser University October 6, 2005 1 Sound Sound waves are longitudinal

More information

y = log b Exponential and Logarithmic Functions LESSON THREE - Logarithmic Functions Lesson Notes Example 1 Graphing Logarithms

y = log b Exponential and Logarithmic Functions LESSON THREE - Logarithmic Functions Lesson Notes Example 1  Graphing Logarithms y = log b Eponential and Logarithmic Functions LESSON THREE - Logarithmic Functions Eample 1 Logarithmic Functions Graphing Logarithms a) Draw the graph of f() = 2 b) Draw the inverse of f(). c) Show algebraically

More information

Physics 1C. Lecture 13A

Physics 1C. Lecture 13A Physics 1C Lecture 13A Quiz 1 Info! It will be a Scantron test that covers Chapter 12 & 13 up to and including the material to be covered on Today.! You are to write the version of your test on the Scantron

More information

Chapter 1 Fundamentals of Sound Waves -1

Chapter 1 Fundamentals of Sound Waves -1 Chapter 1 Fundamentals of Sound Waves -1 Sound Sections What is Sound? Producing a Sound Wave Characteristics of Sound Waves The Speed of Sound Intensity of Sound Waves What is Sound? Sound is such a common

More information

Final: Tuesday, April 29, 7pm, 202 Brooks Makeup Monday April 28, 1pm, 437 White Hall

Final: Tuesday, April 29, 7pm, 202 Brooks Makeup Monday April 28, 1pm, 437 White Hall Final: Tuesday, April 9, 7pm, 0 Brooks Makeup Monday April 8, 1pm, 437 White Hall 67% focused on this last section of the course Chapters 10.1-3, 11.1-, 11.4-5, 13(all), 14.1-5, 5.4 There will also be

More information

Stage 7J Current electricity 7K Forces 7L Sound 7I Energy

Stage 7J Current electricity 7K Forces 7L Sound 7I Energy Year 7 Physics Stage 7J Current electricity 7K Forces 7L Sound 7I Energy Pink I can Problem solve using the skills I have acquired. AND Describe how voltage is divided between the components in a series

More information

Standing waves in air columns flute & clarinet same length, why can a much lower note be played on a clarinet? L. Closed at both ends

Standing waves in air columns flute & clarinet same length, why can a much lower note be played on a clarinet? L. Closed at both ends LECTURE 8 Ch 16 Standing waves in air columns flute & clarinet same length, why can a much lower note be played on a clarinet? L 1 Closed at both ends Closed at one end open at the other Open at both ends

More information

Lectures Chapter 16 (Cutnell & Johnson, Physics 7 th edition)

Lectures Chapter 16 (Cutnell & Johnson, Physics 7 th edition) PH 201-4A spring 2007 Waves and Sound Lectures 26-27 Chapter 16 (Cutnell & Johnson, Physics 7 th edition) 1 Waves A wave is a vibrational, trembling motion in an elastic, deformable body. The wave is initiated

More information

Physics 101: Lecture 22 Sound

Physics 101: Lecture 22 Sound EXAM III Physics 101: Lecture 22 Sound Today s lecture will cover Textbook Chapter 12 Physics 101: Lecture 22, Pg 1 Standing Waves Fixed Endpoints Fundamental n=1 (2 nodes) l n = 2L/n f n = n v / (2L)

More information