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PS: Ch. 11 Q
Question | Answer |
---|---|
periodic back-and-forth motion that transmits energy | wave |
SI unit of frequency | Hertz |
Maximum distance objects are displaced by a wave | Amplitude |
Bending of the path of a wave which is a result of change in the speed of the wave | refraction |
States the angle of incidence equals the angle of reflection | Law of Reflection |
When a wave passes through a narrow opening and begins to spread apart | diffraction |
substance a wave transmits energy through | medium |
when 2 or more waves meet and causes a reinforcement or cancellation to occur within the wave | Interference |
A wave where particles of a transmitting medium oscillate at right angles to the direction of the wave | transverse wave |
number of waves that pass through a given point per a specific time | frequency |
Strength of a sound wave | intensity |
SI unit for the intensity of a wave | decibel |
effect of intensity on the way the ear perceives sound | loudness |
effect of frequency on the way the ear perceives sound | pitch |
sounds that contain pitches above the audible range | ultrasonic |
speed that is above the speed of sound | supersonic |
when a loud noise is caused by a shock wave is a __?__ | sonic boom |
Sounds that can be heard by the ear | audible |
change in frequency caused by an object's motion | doppler effect |
Main factor that affects the speed of sound in the air | temperature |
When 2 notes interfere is a disagreeable way | dissonance |
When multiple reflections cause a long, persistent sound | reverberation |
sound of definite pitch produced by a singing voice or musical instrument | note |
frequency relationships between the fundamental and overtones | harmonic series |
Difference in pitch between one note and another note that has 2x frequency | octave |
dissipating the energy of sound waves in matter | absorption |
sound heard distinctly after being reflected from an object | echo |
most dominant sound created by a musical instrument | fundamental |
caused when 2 notes interfere with the harmony | consonance |
series of organized sound waves that have been deliberately arranged | music |