Science Olympiad Sounds of Music Latest Update 100% Correct

Science Olympiad Sounds of Music Latest Update 100% Correct Antinodes areas of highest vibration Nodes areas of least vibration Amplitude height of a wave compressions regions of high air pressure rarefactions regions of low air pressure intensity power/area pitch perception of frequency by ear Decibel unit of loudness harmonics unit of frequency frequency a mathematical representation of how high or low a pitch is, and is based on the rate that it vibrates at fundamental frequency lowest frequency for an instrument Resonance effect of natural vibrations being amplified INTENSITY( definition ) amount of energy that is transported past a given area of the medium per unit of time Pulse wave A pulse that propagates through a medium Bernoulli Effect creates sound Speed of sound 343 meters per second Doppler effect frequency is higher when observer approaches source or when source approaches observer Constructive interference two wave forms are added together ( creating a louder sound) Destructive interference antinodes cancelling with nodes (creating a diminished waveform) timbre quality of a sound hertz unit of frequency Periodic wave The motion is repeated over and over again Wavelength Length of a wave Periodic force Force repeated over and over How long for each cycle? Period