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What is this? KS3 starter Why is it not good for this? Image of vuvezela: Berndt Meyer © Snapshot Science, 2010Snapshot Science
The vuvezela is a horn that is popular at football matches in Africa. It creates a loud noise, but how loud? Loudness is measured in decibels (dB) KS3 Activity © Snapshot Science, 2010Snapshot Science faintmoderate loudvery loudpainful dB whisper alarm clock lawnmower chainsaw conversation jet engine right next to the speakers at a rock concert Where do you think those go on the decibel scale above? a vuvezela
Sounds louder than 80 decibels are considered potentially dangerous. Hair cells in the inner ear and the hearing nerve can be damaged by loud sounds. This results in hearing loss. What advice would you give to people who are attending matches at the World Cup? © Snapshot Science, 2010Snapshot Science KS3 Activity
Here’s the word. What is the question? NOISE DECIBEL SOUND FREQUENCY PITCH HEARING EAR.
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6 th Grade Objective 1.6. Objective 1.6 Summarize protective measures for ears and hearing.
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Properties of Sound Physical Science Ms. Pollock
What we will do today: State how me measure sound levels. State the unit of sound. Carry out experiments to find the sound levels of everyday occurrences.
Acoustics Waveform Frequency Intensity Resonance Sound Propagation.
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Eardrum Sound waves hit a thin skin call the eardrum. The sound waves cause the eardrum to vibrate. Three Tiny Bones As the eardrum vibrates, it causes.
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The Science Behind the iPod. YEAR MP3 players are few and far between- only ones available are large and clunky or small and not user friendly.
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What are some practical ways we use sound energy? The Human Ear.
TAKING CARE OF YOUR HEARING. Statement of Objective Students will learn how to protect ears from damage due to noise pollution. Students will continue.
Senses- Ears Hearing and balance are the main functions of hearing. Hearing works with the other 4 senses to aid us in obtaining information and keeping.
Hearing Our auditory sense We hear sound WAVES Frequency: the number of complete wavelengths that pass through point at a given time. This determines.
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Source Intensity Level # of Times Greater Than TOH Threshold of Hearing0 dB10 0 Rustling Leaves10 dB10 1 Whisper20 dB10 2 Normal Conversation60.
Noise and Old Ears by Jack Myers. 1 What is the meaning of the word decibel in paragraph 7 of the selection? Ο A. The loudest sound heard by human ears.
Bell Work Wavelength is to ______________ as ___________ is to brightness – hue, intensity – intensity, hue – frequency, amplitude – brightness, hue –
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Sound What is ultrasound? What do we use it for?.
Properties Of Sound Sound waves are produced as longitudinal waves by compressions and rarefactions in matter. The medium for sound waves can be solid,
Warm Up 1. How does the function f(x) = log (x-3)+4 differ from the parent function? 2. Compute a.log (4 10) b. log (4 10 2 ) c.log (4 10 3 ) d.log.
Vibrations and Waves.
Sound How does the ear work?. What does the ear do? index1.htm Lesson 1 page 5 It senses the frequency (pitch)
The Nature of Sound Students will describe how sound is caused by vibrations, how it is transmitted through a medium. Students will also compare the speed.
Hearing is one of the five human senses. Hearing | Sight | Smell | Taste | Touch.
What is noise-induced hearing loss? It occurs when the tiny sensory hair cells in our inner ears are damaged by sounds that are too loud and that last.
Wed. Mar. 12 Do Now: What kind of wave is a sound wave? What unit is used to measure wavelength? What unit is used to measure frequency?
Hearing Sound. Have you ever felt sound? Car with really loud music playing (especially with heavy base).
Measuring Sound Intensity (Decibel) Created for CVCA Physics By Dick Heckathorn 25 April 2K + 5.
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1 Sound waves travel through a medium and can be visualized by Longitudinal or Compressional waves. As the sound moves through the medium, the particles.
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