Have one student hold the string away from her body.Cut a string about 1-1 ½ feet long and tape one end of it to the ping-pong ball.Tuning fork kit (includes tuning fork, ping-pong ball and string).
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This activity explores how sound energy (vibrations) are transferred from the tuning fork to the ping-pong ball to make it move. The result: waves will form as the vibrations are transmitted through the water!.Have students activate the tuning fork again, and place it on the surface of the water (not submerged into it).Next, place the bowl of water on a paper towel.
512 TUNING FORK HOW TO
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One kit includes two tuning forks, a ping-pong ball, string, rubber bands, and a teacher’s guide.īefore starting the experiments, review the vocabulary below to make sure students are familiar with related terms.įrequency - the number of vibrations per second And our tuning fork kit is the perfect tool to conduct these experiments.
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In the activities below, students will use tuning forks to learn more about sound. Once a sound wave enters your ear canal and vibrates your eardrum, your brain interprets the vibrations as sound. Together, a collection of compressions and rarefactions form a sound wave. As the tine’s move back and forth at tremendous speeds, the vibrations press air molecules together - forming compressions - and force them apart - forming rarefactions. The tuning fork’s vibrations interact with the surrounding air to create sound. The vibrations are usually so fast that you can only see it in slow motion. When you strike it against a soft surface - like the bottom of a shoe or the palm of your hand - the tines vibrate back and forth several hundred times per second. And one way to demonstrate this relationship is by using tuning forks to conduct simple experiments.Ī tuning fork is an all-metal device that has a handle and two prongs, known as tines. Understanding the connection between sound and vibrations is an important science concept for students to know. And whether it’s the sound of a person’s voice, the sound of keys jingling, or the sound of a book slamming to the ground, sound is produced when objects vibrate.
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In: Guyton AC, Hall J (eds) Textbook of medical physiology (9th edn).Sound is all around us. Guyton AC, Hall J (2000) The nervous system: general principles and sensory physiology (unit 9). Pestronk A, Florence J, Levine T (2004) Sensory exam with a quantitative tuning fork. Thivolet C, El-Farkh J, Petiot A, Simonet C (1990) Measuring Vibration Sensations with graduated tuning fork. Rosecrance JC, Cook TM, Satre DL, Goode JD (1994) Vibration sensibility testing in the workplace. J Hand Ther 17(1):24–30, Jan–Marįreeman C, Okun MS (2002) Origin of the sensory examination in neurology. Hubbard MC, MacDermid JC, Kramer JF (2004) Quantitative vibration threshold testing in carpal tunnel syndrome: analysis strategies for optimizing reliability.
512 TUNING FORK PC
Burns TM, Taly A, O’Brian PC (2002) Clinical versus quantitative vibration assessment: improving clinical performance.