Resonance refers to an effect in which the
a. whole instrument vibrates on its natural or fundamental frequency
b. intensity of a sound decreases over time
c. pitch of a note is compared to a pure tone
d. pitch changes when two waves with similar frequencies interfere with each other
The correct answer is a. whole instrument vibrates on its natural or fundamental frequency
Resonance is a process in which a certain instrument vibrates due to force from another vibrating system being applied to it. An example of this would be a woodwind instrument that vibrates when you blow into it, with a blow being a force of another vibrating system that is your lungs.
