![]() ![]() ![]() Next, place the bowl of water on a paper towel.Show them how to use their hands to stop the vibrations of the tuning fork.Is the volume loud or soft? Does it make a high-pitch or low-pitch sound? Have students activate the tuning fork by striking it with a rubber mallet or on a block of wood, the heel of their hand, or the bottom of a shoe.We may not be able to see sound waves move through the air, but we can demonstrate how sound made by a tuning fork creates a pattern of waves in water. Volume - the loudness or softness of a sound Pitch - the highness or lowness of a sound 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. 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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