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Physics - Chapter 26

QuestionAnswer
What is the origin of all sound? vibration
_______ is our subjective impression about the frequency of sound. Pitch
What type of wave is sound? longitudinal
What is the name given to a region of compressed air in a sound wave? compression
What is the name given to a region of lower pressure air in a sound wave? rarefaction
Which type of medium carries sound the loudest and fastest? solids
Which type of medium carries sound the least loud and the slowest? gas
The is 330 m/s at zero degrees C. What is it? speed of sound
What happened to the speed of sound as the temperature increases? increases
The ___ of a sound is proportional to the square of the amplitude. intensity
The unit of intensity of sound is the ____> decibel
The ____ of an object is the special set of frequencies that together form the special sound. Its the reason when you drop a wood block and a wrench on the floor they sound different natural frequency
_____ occurs when the frequency of a forced vibration on an object matches the object's natural frequency causing its amplitude to increase. resonance
_____ are the periodic variation in the loudness of sound. Beats
Any sound that has a frequency below 20 Hz is called ______. infrasonic
Any sound that has a frequency above 20 000 Hz is called_____. ultrasonic
Created by: abolvin