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Cool Tools for Sound and Waves Buzz Putnam Whitesboro High School, NY buzzputnam@gmail.com
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Educational research has shown that “pounding” concepts into students’ heads through lecture only does not result in positive student learning and long- term retention of the concepts This Should Do It!
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Variety of Methods Many concepts in science are not well-understood so a variety of teaching methods are encouraged by educational researchers.
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Demonstrations It has been shown that using Demonstrations in the science classroom helps students retain concepts, energizes the science classroom and is more fun!
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Key Terms: Wavelength Frequency Amplitude Speed Wave Characteristics
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Types of Waves Transverse Longitudinal (compression) Torsional Surface Wave Types:
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Reflection and Interference Reflection of Waves – “hard” boundary – “soft” boundary Wave Interference – Constructive – Destructive
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A WAVE REFLECTS FROM A MORE DENSE MATERIAL INVERTED OR UPSIDE DOWN A WAVE REFLECTS FROM A LESS DENSE MATERIAL OR MEDIUM RIGHT SIDE UP.
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Constructive interference
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Find the area(s) of Constructive & Destructive Interference.Interference
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Reflection and Interference
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The Sound Wave Interference Kit can show you this phenomenon… live!
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White-blue White-green White-red Wavelengths of light cancel in Thin Films
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Interference in thin films
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Formation of Standing Waves… Interference and Reflection
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Standing Waves… Nodes & Antinodes
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Waimea Bay, OahuOahu
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Sound Pipes and Singing Rods Sound Pipe Singing Rod
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Standing Longitudinal Wave
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Standing waves in wood & aluminum bats Wood bat nodes Aluminum bat
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Standing waves in bridges & Tennis racquets
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Standing Waves in CLOSED & OPEN PIPES…
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Challenge Question
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Beats !
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Beat frequency
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Vibrations and Sound
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Talkie Tapes Tuning Forks
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Frequency, Pitch, and Resonance 1 Wavelength
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Frequency, Pitch, and Resonance Compression Waves
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Boomwhacker Music You can play your own tunes:
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Sympathetic Resonance & the Doppler Effect Sympathetic Resonance Boxes Doppler Ball Music Box Mechanism
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Sympathetic Resonance, Interference & the Doppler Effect
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Don’t Forget the CoolStuff Fill out the CoolStuff Newsletter card for a chance to win a $25 gift certificate! CoolStuff newsletter! It’s full of fun and informative labs, demos, and tools for your classroom!
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What is CoolStuff?
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Buzz Putnam Science Workshops for Teachers & Student groups/assemblies Making Science Phun Again! 315-761-5062 buzzputnam@gmail.com “The Fizziks Wizard” http://buzzputnam.wix.com/fizzikswizard Contact info for Demo ideas, PowerPoints, Workshops, etc.
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