![]() ![]() This simulation from PhET has several usage modes. The exercise guides the learner to key observations and concludes with a short quiz that assesses key understandings. We highly recommend the accompanying exercise. Three particles are color-coded different than the rest, allowing a learner to view the longitudinal motion of the air particles. ![]() For the sound waves, a multitude of air particles are shown vibrating the formation of rarefactions and compressions is clearly visible. The pattern of crests and troughs are shown for the string wave. The learner may control the frequency, speed, and amplitude of the vibrations. The simulator allows a learner to explore both waves traveling through strings and sound waves traveling through air. The Simple Wave Simulator from The Physics Classroom provides an excellent introduction to the nature of a mechanical wave. The Physics Classroom Tutorial, Sound Waves and Music Chapter r, Lesson 2.The Physics Classroom Tutorial, Sound Waves and Music Chapter, Lesson 1.Readings from The Physics Classroom Tutorial To know that the speed of sound (like any wave) is dependent upon the properties of the medium, to compare the speed of sound in a solid, liquid, and gas, and to relate the speed of sound to the frequency and wavelength of the sound wave.To relate the intensity of a sound wave to the amplitude of vibration of the particles of the medium and to use the deciBel equation to calculate intensity or the deciBel level. ![]() To understand the concept of frequency as the number of back-and-forth oscillations of a particle about its resting position and to relate the frequency of sound to the pitch.To describe sound as a longitudinal, mechanical, pressure wave that is produced by a vibrating object.Teacher Toolkits » Sound Waves » Sound Waves - Complete Toolkit ![]()
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