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© OUP: To be used solely in purchaser’s school or college 8L Sound and hearing Making sounds Hearing and deafness 8L Sound and hearing Too loud!
© OUP: To be used solely in purchaser’s school or college Making sounds 8L Sound and hearing
© OUP: To be used solely in purchaser’s school or college 8L Sound words 1 vibration 2 pitch 3 loudness 4 sound 5 amplify Ahow high or low it sounds to the listener Bvibrations that can be heard Cto make sound louder Dhow loud or quiet it sounds to the listener Ea backwards and forwards movement which transmits sound Match the words to the definitions. Ea backwards and forwards movement which transmits sound Ahow high or low it sounds to the listener Dhow loud or quiet it sounds to the listener Bvibrations that can be heard Cto make sound louder
© OUP: To be used solely in purchaser’s school or college 8L Describing waves What does a large amplitude tell you about the sound? What does a large number of waves (frequency) tell you about the sound? What unit is used to measure frequency?
© OUP: To be used solely in purchaser’s school or college 8L Sound pictures Match the description to the oscilloscope pattern: 1. Low-pitched sound, very loud 2. Loud, high-pitched sound 3. Medium sound with medium pitch 4. Quiet, high-pitched sound ABCD D C B A
© OUP: To be used solely in purchaser’s school or college 8L Sound speeds Concorde was the first passenger jet to travel faster than the speed of sound. But how fast is that? The speed of sound: In air = 330 metres per second In water = 1500 metres per second In steel = 6000 metres per second Why did native American trackers put their ear to the ground if they wanted to listen for their prey?
© OUP: To be used solely in purchaser’s school or college 1. I can increase the pitch of a note on a guitar by... a) plucking the string harder b) tightening the string c)holding the guitar tighter. 2. I play the lowest notes on an electric guitar by... a) not pressing on the strings on the fretboard b) touching the strings very gently c) turning the volume down on the amplifier. 8L Rock legends?
© OUP: To be used solely in purchaser’s school or college 3. Hitting the strings hard on a guitar will... a) make the note louder b) make the note higher pitched c)hurt my fingers. 4. The sound from an electric guitar dies away when... a)the string stops moving b) the guitarist stops plucking the strings c) the strings are magnetised. 8L Rock legends?
© OUP: To be used solely in purchaser’s school or college 5. A drummer can change the pitch of the drum by... a) changing the tightness of the drum skin b) hitting the skin harder c)using different drumsticks. 6. A drummer grabs hold of a vibrating cymbal to... a) stop it making a sound b) change the pitch of the sound c) stop it falling off the stage. 8L Rock legends?
© OUP: To be used solely in purchaser’s school or college 8L What is sound? Sound is created by something vibrating. Imagine the surface of a drum. As the skin wobbles it pushes on the air next to it and squeezes it to make a little area of high pressure.
© OUP: To be used solely in purchaser’s school or college 8L What is sound? Then the skin moves the other way and creates an area of low pressure. If this happens over and over again you get areas of high and low pressure being made. These areas pass through the air and to our ears where we detect them as sound.
© OUP: To be used solely in purchaser’s school or college 8L Match signals to patterns of particles We can see these areas of high pressure with a microphone and an oscilloscope.
© OUP: To be used solely in purchaser’s school or college 8L The frequency range Make a list of these in order of frequency, starting with the lowest. AThe note middle C in the middle of a piano keyboard BBottom string on a bass guitar CTypical whistle for a dog DRumble from an earthquake EThe highest note sung by a human being DRumble from an earthquake BBottom string on a bass guitar AThe note middle C in the middle of a piano keyboard EThe highest note sung by a human being CTypical whistle for a dog
© OUP: To be used solely in purchaser’s school or college Match the oscilloscope traces to the source of the sound. 1. A flute playing a single clear note 2. A dog whistle 3. A milk bottle dropped onto a floor 4. A rumble of thunder ABCD B C D A 8L I’ll name that tune in...
© OUP: To be used solely in purchaser’s school or college 1. The softer you hit a drum, the quieter the sound. 2.Louder sounds are higher pitched. 3.Bigger vibrations make louder sounds. 4.Hollow objects make sounds louder. 5.Carpets and curtains make sounds louder. 8L Sound as a … sound? True or false? TRUE FALSE TRUE FALSE
© OUP: To be used solely in purchaser’s school or college 1. High sounds have a low frequency. 2.Dogs can hear higher pitched sounds than humans can. 3. Some sounds can make you deaf. 4.Hard surfaces reflect sound. 5.Sound travels faster in water than steel. 8L Sound as a … sound? True or false? FALSE TRUE FALSE
© OUP: To be used solely in purchaser’s school or college Hearing and deafness 8l Sound and hearing
© OUP: To be used solely in purchaser’s school or college 8L The human ear
© OUP: To be used solely in purchaser’s school or college 8L Hear this! Which parts can move? Which part carries a nerve signal? Which part is made of bone? ear flap (pinna) sound waves eardrum cochlea bones of middle ear nerves to brain
© OUP: To be used solely in purchaser’s school or college 8L Batty! Insect-eating bats use sounds with a frequency of Hz (or 80 kHz) to ‘see’ their prey. The bat sends out a sound and then listens for the echo as it bounces back from the insect. The bat compares the sound it hears from both ears to work out the direction the insect is in. What would happen to a bat if it went deaf in one ear?
© OUP: To be used solely in purchaser’s school or college Too loud! 8L Sound and hearing
© OUP: To be used solely in purchaser’s school or college 8L Measuring loudness Why do we need a way to measure the loudness of sound? What unit is used to measure sound? I’ve asked you to turn that rubbish down! It’s too loud. You’ll damage your ears. It’s not as loud as you have the television. I’ve already turned it down – and it’s not rubbish!
© OUP: To be used solely in purchaser’s school or college 8L Hear this!
Sound & Hearing 17.4 Sound waves travel through a medium as energy is passed from particle to particle. If the particles are close together, as in.
Sound and Hearing. Speed of sound The speed of sound in air is around 330 m/s. What happens when sound travels through different materials? Material Speed.
IGCSE Physics Sound. Aims: To describe how to measure the speed of sound in air by a simple direct method. To use an oscilloscope to determine the frequency.
Sound Production of sound by vibrations The tuning fork vibrates and you hear a sound. Sounds are made when an object vibrates. Sounds is a form.
1 of 40© Boardworks Ltd 2008 What causes sound? The tuning fork vibrates and you hear a sound. Sounds are made when an object vibrates. Take a tuning fork.
Sound. What makes sound? vibrations How do brass instruments like a trumpet or tuba produce sound? Vibrating air.
Unit 2 Lesson 1 Sound Waves and Hearing Copyright © Houghton Mifflin Harcourt Publishing Company.
20 August 2014 LO:Sound Chesterhouse Primary. The Ear.
Sound Sound is a type of energy that you can hear. Sounds are made by something vibrating.
Sound Vibrations Loudness Pitch and frequency Echoes.
SOUND and HEARING Test Practice GET STARTED !. Sound is ____________ that you can hear. bones speed vibrations bounces Go to the next question.
Sound Waves. Sound is a Longitudinal Wave particles vibrate parallel to the direction of the motion of the wave.
1 of 36© Boardworks Ltd of 36 3 of 36© Boardworks Ltd 2007 What causes sound? The tuning fork vibrates and you hear a sound. Sounds are made.
Sound What is sound? It is made when an object or material vibrates. A vibration is a fast, backwards and forwards movement that repeats many times.
Beath High School - Int 1 Physics1 Intermediate 1 Physics Sound and Music Sound Waves Speed of Sound Using Sound Amplified Sound.
© Boardworks Ltd of 20 © Boardworks Ltd of 36 KS3 Physics 8L Sound and Hearing.
Chapter 12: Sound and Light. Goals/Objectives After completing the lesson, students will be able to... Recognize what factors affect the speed of.
Can You Hear It? (Almost) Everything You Need to Know About Sound.
SOUND ENERGY NOTES. SOUND ENERGY Sound energy is a form of energy caused by vibrations. Sound energy helps us hear voices, noises, and music. Some sources.
1 of 40© Boardworks Ltd of 40 3 of 40© Boardworks Ltd 2008 What causes sound? The tuning fork vibrates and you hear a sound. Sounds are made.
Vibrations Sound waves are compression waves. They are made of atoms being pushed, or compressed, by other atoms. Why wouldn’t sound waves carry in space?
A sound wave passes down the ear canal It hits the eardrum and makes it vibrate The vibration is passed on through some small bones into a liquid Nerve.
© Boardworks Ltd of 20 © Boardworks Ltd of 40 KS3 Physics 8L Sound and Hearing.
Sound Chapter Properties of Sound Sound waves – Longitudinal Waves – Caused by vibrations – Carry energy outward, which hit your ear.
© Boardworks Ltd 2004 Waves: Sound IGCSE Physics.
Sound. Aim: To learn about the physics of sound In this topic we will learn that: Sound is form of energy Sound is produced by vibrations Sound needs.
Shadows Shadows are places where light is “blocked”: Rays of light.
SOUND QUESTIONS. 1. WHAT CAUSES ALL SOUNDS? page 548 – “Every sound has something in common with every other sound. Each is produced by something that.
Sound is made by something that can move back and forth. The back and forth motion is a vibration. When vibrations spread through matter, the vibrations.
Sound Checkpoint Physics. Sound You have probably performed some experiments on sound without knowing it. At some time most people have made a ruler vibrate.
Sound What is ultrasound? What do we use it for?.
Sounds are longitudinal mechanical waves. They are created by a disturbance and must travel through a medium, usually air, but sound can travel through.
Sound and Waves Integrated Science. Sound Waves Description Light waves are transverse waves. Sound waves are longitudinal waves.
1 Sound Chapter The Nature of Sound Remember: -every sound is produced by an object that vibrates. -sound waves are compressional waves, which are.
Sound Our ears magnify sound 20 times Resonance is what makes opera singers break glass when they hit a high note. The frequency of the voice matches.
The Ear Ear canal Ear drumCochlea Auditory nerve Semi- circular canals - The Ear Pinna Stirrup AnvilHammer Eustachian tube.
SCIENCE OF SOUND Sound is a Form of Energy Sound is a Compressional Wave Sound requires a medium Hearing Uses of Sound Sound and Music.
RIGHT PAGE 58 October 25 Focus: Sound and Hearing Objective: Explain the relationship among the rate of vibration, the medium through which vibrations.
Vocabulary for Sound. The sound of the phone caused Kara to answer it. The noise something makes.
Sound Overview The Facts of Sound The Ear and Sound Sound Vocabulary Musical Instruments and Sound.
How Sounds Are Made What happens when a bell shakes or a drum moves up and down? Vibrations occur – sound is produced when matter vibrates Remember: sound.
SOUND SECONDARY 3 PHYSICS. NATURE AND PRODUCTION OF SOUND Sound is….. A form of energy an example of longitudinal wave Produced by vibrating sources placed.
Sound Name: ________________ Class: _________________ Index: ________________.
December 5 th (A day) December 8 th (B day) Study Hall: Work quietly at your seat (homework, study, draw, read) NO TALKING. NO EXCEPTIONS. SIT IN ASSIGNED.
By: Drew Harris. Vibrations Sound Back and forth movements like “snapping a ruler” are vibrations. When you hum, you can feel vibrations by putting your.
- Sound. Sound is a form of energy that travels through matter as waves.
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