16.2 Properties of sound waves How sound travels Can sound travel through solids or liquids? Yes.

Slides:

Advertisements

Similar presentations

Advertisements

Chapter 12 Sound. What is sound? Sound is a compressional wave which travels through the air through a series of compressions and rarefactions.

SOUND a range of compression wave frequencies to which the human ear is sensitive.

a range of compression wave frequencies to which the

Sound Chapter What is Sound? I can explain how sound waves are produced. I can describe how sound waves are transmitted. I can compare the phases.

How Sound Travels Sound is a mechanical wave It moves by vibrating particles in: –Solids –Liquids –Gases Sound can not travel in a vacuum (empty space)!!!

Chapter-16 (continued) The Nature of Sound Longitudinal Sound Waves Sound in air is a longitudinal wave that is created by a vibrating object, such.

Sound Waves Physics Chapter 13 Section 1. I. Production of sound waves Produced by an object vibrating Produced by an object vibrating -ex. Tuning fork.

The Energy of Waves Light and Sound. The Nature of Waves Wave: a periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium.

Sound Waves we can hear.

+ Perceiving Sound. + Before we start! A review of Light.

a range of compression wave frequencies to which the

17.4 Sound and Hearing Sound waves are longitudinal waves that travel through a medium. Many behaviors of sound can be explained by using a few properties:

Sound Name: ________________ Class: _________________

Sound Basics Overview What is sound Speed Frequency Range.

16.5 The Nature of Sound Longitudinal Sound Waves Sound in air is a longitudinal wave that is created by a vibrating object, such as a guitar string, the.

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

Characteristics of Sound. What Produces Sound?? If a tree falls in a forest and no one is there to hear it, will there be sound?

Chapter 15 - Sound Sound wave is a longitudinal wave.

11.5 How do we hear? Put two fingers gently on your throat while you speak. What do you feel?

An Intro to Waves Hz are units of: A. amplitudeB. frequency C. periodD. wavelength In a sound wave, rarefactions are areas of: A. high amplitude B. low.

© Oxford University Press 2011 IP Sounds around us Sounds around us.

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

Unit 10: Sound.

Chapter 12 Sound Characteristics of Sound Sound can travel through any kind of matter, but not through a vacuum. The speed of sound is different.

Understand that sound waves are produced by vibrating objects, and that sound requires a medium to travel through. Understand the links between amplitude,

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)

Can You Hear It? (Almost) Everything You Need to Know About Sound.

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

SOUND WAVES are the result of VIBRATIONS

EQ: How do different mediums affect the speed of sound?

What type waves are produced by the noise from a tuning fork?

SPH3U: Waves & Sound Wave Speed & Sound. The Universal Wave Equation Recall that the frequency of a wave is the number of complete cycles that pass a.

Sound Waves Sound A form of energy that causes molecules of a medium to vibrate back and forth in a series of compressions and rarefactions as a longitudinal.

HEARING (and Balance) Hearing: Audition Balance: Vestibular System.

(8.5).  Are longitudinal waves  Require a medium to travel through  The type of medium influences the speed of the sound wave  Sound travels faster.

Ms. Barlow’s 8th Grade Physical Science Class

I. What is Sound? Longitudinal waves or compression waves. Created by vibrations Vibrations are composed of Compression Rarefaction Medium (or media)

PHYSICS – Sound.

Sound Chapter Properties of Sound  Sound waves are caused by vibrations and carry energy through a medium.  The speed of sound depends on the.

Properties of sound Sound in a concert Some facts about sound Sound waves are longitudinal waves Speed of sound Sound and light waves compared Audible.

 Sounds are longitudinal mechanical waves.  They are created by a disturbance and must travel through a medium, usually air, but sound can travel through.

Lecture #28: Waves and Sound AP Physics B. wave direction What is a wave? A wave is a traveling disturbance. A wave carries energy from place to place.

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

SOUND Nature and Properties. MAIN IDEA Sound waves are longitudinal waves that travel only through matter.

Book Chapters 16 and 17 Unit 8 - Waves and Sound.

Sound Energy Notes.

Lecture 44 – Lecture 45 Sound Ozgur Unal

Unit 1.3 Sound.

Sound Learning Objectives:

09/11/2018 Think of as many things that make sound as you can, and for each of these think about what is vibrating.

a range of compression wave frequencies to which the

Sound Speed and Frequency: Learning Goal

The Physics of Sound.

SOUND a range of compression wave frequencies to which the

Sound Chapter 47.

Sound Chapter 24.

Sound Chapter 11.

Sound Chapter 26.1 – 26.4.

How sound travels and how we hear it!

Chapters Sound and Musical Sounds Ch20 Homework:

Presentation transcript:

16.2 Properties of sound waves How sound travels Can sound travel through solids or liquids? Yes.

16.2 Properties of sound waves In a tin can phone, sound can be transmitted via a string, which is a solid. Dolphins communicate by sending sound underwater.

16.2 Properties of sound waves to power supply bell jar electric bell to vacuum pump Sound waves cannot travel through a vacuum.  The sound of the electric bell becomes quieter when the amount of air in the jar decreases.  No sound can be heard when it is a vacuum inside the jar. ∵ Sound waves require a medium for transmission. Video: Can sound waves travel through a vacuum?

16.2 Properties of sound waves  Astronauts cannot communicate directly by sound waves.  Radio systems – the sound signals are carried by radio waves which can travel through a vacuum.

16.2 Properties of sound waves Speed of sound The first car in the world that can travel faster than the speed of sound in air. Do you know how fast the sound travels in the air?

16.2 Properties of sound waves  speed of sound in air microphones timer  The timer measures the time taken for the sound wave to travel between the microphones.

16.2 Properties of sound waves In an orchestra performance, the sounds from different instruments which have different frequencies and loudness reach our ears at the same time.

16.2 Properties of sound waves  The speed of a sound does not depend on its frequency or loudness.  Temperature can affect the speed of sound. e.g. At 0 ºC, the speed of sound in dry air = 331 m s –1. As temperature increases, the speed of sound also increases.

16.2 Properties of sound waves  The speed of sound also depends on the medium in which it travels. In general, speed of sound follows this order: solids > liquids > gases MediumSpeed (m s –1 ) Gases– Carbon dioxide (0 ºC)258 Air (0 ºC)331 Air (20 ºC)344  Speeds of sound in different materials:

16.2 Properties of sound waves MediumSpeed (m s –1 ) Liquids– Mercury (20 ºC)1451 Water (0 ºC)1402 Water (20 ºC)1482 Water (100 ºC)1543

16.2 Properties of sound waves MediumSpeed (m s –1 ) Solids– Lead1960 Copper3100 Gold3240 Brick3650 Wood4000 Glass4540 Iron5000 Steel5941 Aluminium6420

16.2 Properties of sound waves Frequency of sound waves  Frequency of sound waves produced = Frequency at which the source vibrates  Tuning forks can produce sound waves of particular frequencies.

16.2 Properties of sound waves the frequency of sound produced the note produced

16.2 Properties of sound waves  The human ear can detect sound waves of frequencies within the human audible frequency range –  age approximately 20 Hz to Hz. Simulation: Testing your audible frequency range ability to hear high frequency sound

16.2 Properties of sound waves  The audible frequency ranges for some animals: AnimalAudible frequency range (Hz) bats1000 – cats100 – dogs40 – dolphins70 – elephants16 – horses31 –

16.2 Properties of sound waves That’s the end of Section 16.2 Check Point Key Ideas Previous Page Section 16.3 Exit