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### 26 Cards in this Set

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 Sound - - Phychological Definion Sensation caused on human ear by acoustic event or comressional wave (listener is needed -- interpret loudness or pitch) Physical Definition of Sound Disturbance in a medium that is caused by a vibrating body that sets the medium into a vibration Need: Sound source capable of vibrating and medium capable of vibrating A sound source must have physical properties of mass and elasticity A medium is an agent in which a sound wave (caused by vibratory movement) flows through material where energy transfer occurs A medium must have mass and elasticity The simplest ocillation is Simple harmonic motion MASS IS the amount of matter in an object a body's resistence to change (measurement) measurment of not wanting ot change # of atoms in a gram will be consistent The greater the mass.. the greater the body's resistence to change 1kg = 1000g Mass (m) resistence to change Weight a force -- the attractive force that gravity exerts on a mass Force (F) an influence that can deform or change an object's state of motion. The push or pull on an object in a specific direction Acceleration a F = F=ma a= acceleration m=mass F=Force Weight (w) is a force exerted on mass If mass and weight increase proportionally, this would be called a direct relationship If one element increases and the other decreases this would be called an indirect relationship Density (p) amount of mass per unit volume p=m/v where density has a direct relationship to mass and densiity has an indirect relationship to volume Elasticity (E) "object's Springyness" property that allows an object to return to it's original shape once a force has acted upon it. object's ability to resist distortion or changes in shape or volume What element have the quality of elasticity? all solid, liquid and gas What is the point when a force applied adequate enough to cause permanent distortion? Elastic LImit Point of breaking depends on internal elasticity A sound source must have both mass and elasticity Second dummy question Second dummy answer Third dummy question Third dummy answer