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Samuel DuPont 2009. Can you hear it?. Sound Energy. Samuel DuPont 2009. Review – 5 Forms of Energy?. Sound. Heat. Light. Electrical. Motion. Samuel DuPont 2009. What is Sound?. Sound is caused by motion of air Vibrations The air moves in waves Sound Waves
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Samuel DuPont 2009 Can you hear it? Sound Energy
Samuel DuPont 2009 Review – 5 Forms of Energy? • Sound • Heat • Light • Electrical • Motion
Samuel DuPont 2009 What is Sound? • Sound is caused by motion of air • Vibrations • The air moves in waves • Sound Waves • Similar to “Energy of Motion” • Moving air
Samuel DuPont 2009 Vibrations and Pitch • A Sound Wave • Length of the Wave (Wavelength) • Pitch • Amplitude • How loud it is
Samuel DuPont 2009 Vibrations and Pitch • Wavelength determines Pitch Low Pitch (Bass) High Pitch (Treble)
Samuel DuPont 2009 When we combine all the sounds together… • We get a full sound wave
Samuel DuPont 2009 How do we make sound? • We make Vibrations • Smack our hands together • Hit the desk
Samuel DuPont 2009 Lets Experiment! • Vibrating Rulers • Shorter makes higher pitch • Rubber bands • Stretching makes higher pitch • Acoustic Guitar