Sound.

Slides:

Advertisements

Similar presentations

Chp 13 Sound and Music.

Advertisements

Sound Notes. The Nature of Sound Sound travels in longitudinal waves consisting of oscillating compressions and rarefactions through the air. Sound travels.

Sound: Amplitude & Pitch Essential Question: How are sound waves affected by changes in amplitude and pitch?

Sound Waves. What is Sound? Sound is caused by a vibration of atoms in pulses. Each sound wave pulses with a certain frequency. The vibration pulse causes.

7th grade Notes Week 17-Monday

By Aimee Chavez. Wave: a disturbance that transfers energy from place to place. The material through which a wave travels through is called a medium.

What is Sound?.

20 pt 30 pt 40 pt 50 pt 10 pt 20 pt 30pt 40 pt 50 pt 10 pt 20 pt 30 pt 40 pt 50 pt 10 pt Sound.

 Sound waves carry information to your ears.  Most people hear sounds between 20 hertz and 20,000 hertz.  Sound waves are longitudinal waves— compressions.

SOUND NOTES SOUND NOTES (Click title to view video)

SOUND WAVES PRODUCTION  Vibrating prongs set the air molecules in motion  Top: molecules closer together high air pressure (compression)  Bottom:

Sound SOL 5.2. What is Sound? Sound is a form of energy that is produced and transmitted by vibrating matter as it moves backwards and forwards. They.

Sound and Waves.

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 Waves Sound is a disturbance that travels through a medium as a longitudinal wave.

Sources of Sound  sound is a mechanical wave produced by vibrations that occur in a medium-- generally air  sound is a longitudinal wave.

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

17.4 Sound and Hearing You can identify sounds without seeing them because sound waves carry information to your ears. People who work in places where.

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.

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

What is sound?* Sound begins with a vibration. Sounds travel in waves through a medium.

 Sound is a disturbance that travels through a MEDIUM as a LONGITUDINAL WAVE.

Sound: Amplitude & Pitch Essential Question: How are sound waves affected by changes in amplitude and pitch?

Sound Waves. A. What Causes Sound 1. It is produced by an object that vibrates. 2. Depends on the collisions of particles to transfer energy through a.

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 $ $ $ $ $ $ $ $ $ $

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

Science 8-Chapter 4—Lesson 1 Quiz

Sound and Waves.

Sound: Amplitude & Pitch

Sound Learning Objectives:

Learning Target 2 Describe how sound energy is transferred by waves.

Sound and Waves.

Unit 6 Chapter 18 & 19 Sound and Light

Ch. 20 Sec. 1 & 2 The Nature of Waves & Properties of Waves

Sound: Amplitude & Pitch

Which Way Did That Thing Go?

The Physics of Sound.

Sound and Hearing it.

Notes 21.1 – Properties of Sound

Copy Waves Waves – a disturbance that transfers energy from one place to another without transferring matter.

Unit: Sound and Light Lesson 2 Properties of Sound

Properties of Sound Chapter 16 Section 2.

Sound and HOW WE Hear it.

Sound and Waves.

Sound: Amplitude & Pitch

Sound: Amplitude & Pitch

Sound: Amplitude & Pitch

Sound: Amplitude & Pitch

Sound: Amplitude & Pitch

The Nature of Sound Physics Chapter 16A.

Sound: Amplitude & Pitch

Sound and Waves.

Sound Chapter 11.

Sound Chapter 26.1 – 26.4.

Sound: Amplitude & Pitch

Chapter 12, Section 2 Properties of Sound

Sound: Amplitude & Pitch

Sound Waves, Pitch, and Loudness

Chapter 12 Notes.

Sound and Waves.

Sound: Amplitude & Pitch

Sound and Hearing it.

Presentation transcript:

Sound

Straw Launch Lab p. 470 Read the directions on p. 470. Write a hypothesis about this experiment. If … then…because… List the variables: Independent: Dependent: Constants: Complete the experiment, following the directions in the book. Create a chart to list your observations. Complete the Think About This questions. Straw Length Bottom Covered? Description of Sound Half No Quarter Eighth Yes

Sound Waves Travel through air Change air pressure

Sound Waves Compressions Area of a longitudinal wave where particles of the medium are closer together Rarefactions The region of a longitudinal wave where particles are farthest apart

Sound Waves Properties of Sound Waves Pitch How high or low a sound is Higher frequency = higher pitch

Sound Waves Properties of Sound Waves Amplitude and Energy More energy = more amplitude

Sound Waves Properties of Sound Waves Speed Depends on type of medium and temperature In a gas = faster as temp increases In a solid/liquid = faster as temp cools

Sound Waves Properties of Sound Waves Intensity (Loudness) Farther from source = less energy and less intensity (loudness)

Sound Waves Properties of Sound Waves Decibel (dB) Unit used to measure sound intensity (loudness) Increase of 10dB is 2 times as loud

Sound Waves

Ear