RRCS MOBILE
 BACK VARIOUS NOTES: SOUNDS AND WAVES Chapter 1 and 2 notes- SOUND      -       A wave is disturbance that carries from one place to another. -       Mechanical waves require a medium. Electromagnetic a vacuum or through a medium. -       When a wave is graphed,  the highest points are called a crest and the lowest points are called troughs. -       The maximum displacement of a wave is its amplitude. -       The distance between two consecutive similar points on a wave is a wavelength. -       The frequency of a wave is the number of waves that pass a point per unit of time. -       In a transverse wave, the motion of the medium is at the right angles of the direction of the motion of the waves. -       The motion of the medium is parallel to the direction of a longitudinal wave. -       The wave speed equals frequency times the wavelength. -       The density and elasticity of a medium affect the speed of the wave. -       Reflection occurs when a wave bounces back. -       Refraction is the bending of waves due to a change in speed -       The low of refraction states that the angle of the incidence equals the angle of reflection. -       The bending of the waves around the edge of the barrier is called diffraction. -       Waves traveling through the same space at the same time interfere with each other. -       A wave produced at the resonant frequency of a material is a standing wave -       Sound is a form of energy that causes particles of medium to vibrate back and forth. -      Sound is a longitudinal wave. -      The speed of sounds on the properties of the medium. Speed travels faster at high temperatures, in more elastic mediums, and in less dense mediums.
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