Back Flashcards
A combination of sounds with distinct pitch and specific pattern is called what?
music
What term describes the differences among sounds of the same pitch and loudness?
sound quality
Most musical instruments produce sound by having a structure that vibrates linked to a what?
Resonator.
What causes reverberation in concert halls?
Reflections of sound waves off surfaces.
What is used by bats to navigate and find prey?
Echolocation.
What term is used to describe underwater sound wave reflection used to locate objects?
Sonar.
If the source of a sound were to suddenly stop moving toward you what would happen to the pitch?
It would drop immediately.
Which is the purpose of resonance in musical instruments?
to reduce overtone
Three beats are heard in one second when two notes are played together. If the higher note has a frequency of 740 Hz, what is the frequency of the lower note?
737 Hz.
To make an object produce sound what must the object do?
Vibrate.
What is it called when sounds are irregular and disorganized?
Noise.
What gives musical instruments their distinctive sounds?
Their material
What do oscillating electrons produce?
Electromagnetic waves.
Which electromagnetic wave is the shortest?
Gamma rays.
Which electromagnetic wavelength is slightly longer than visible light?
Infrared waves.
