sound

Question 1

frequency

Answer 1

of a vibration is the number of cycles occurring per second (pitch)

Question 2

amplitude

Answer 2

the maximum displacement of any molecule from its rest position (loudness)

Question 3

overtones

Answer 3

multiples of the fundamental frequency (quality)

Question 4

frequency limits of audibility

Answer 4

the highest and lowest frequencies that can be heard by the human ear (20Hz - 20kHz)

Question 5

resonance

Answer 5

if the frequency of a periodic force applied to a body is the same as or very near its natural frequency that body will vibrate with a very large amplitude

Question 6

sound intensity

Answer 6

the rate at which sound energy is passing through unit area at right angles to the direction in which the sound is travelling at that point (I=P/A-W/m²)

Question 7

threshold of hearing

Answer 7

the smallest sound intensity detectable by the average human ear at a frequency of 1kHz (1x10⁻¹²)

Question 8

fundamental frequency of a string

Answer 8

a string vibrating with an antinode at its center and a node at each end us vibration at its fundamental frequency