Science Olympiad Sounds of Music

Science Olympiad Sounds of Music Antinodes - answerareas of highest vibration Nodes - answerareas of least vibration Amplitude - answerheight of a wave compressions - answerregions of high air pressure rarefactions - answerregions of low air pressure intensity - answerpower/area pitch - answerperception of frequency by ear Decibel - answerunit of loudness harmonics - answerunit of frequency frequency - answera mathematical representation of how high or low a pitch is, and is based on the rate that it vibrates at fundamental frequency - answerlowest frequency for an instrument Resonance - answereffect of natural vibrations being amplified INTENSITY( definition ) - answeramount of energy that is transported past a given area of the medium per unit of time Pulse wave - answerA pulse that propagates through a medium Bernoulli Effect - answercreates sound Speed of sound - answer343 meters per second Doppler effect - answerfrequency is higher when observer approaches source or when source approaches observer Constructive interference - answertwo wave forms are added together ( creating a louder sound) Destructive interference - answerantinodes cancelling with nodes (creating a diminished waveform)