17.4 - sound and hearing

Question 1

longitudinal sound waves (spring)

Answer 1

when speed of the wave depends on the medium (fastest in solids and slowest in gases)

Question 2

intensity

Answer 2

the strength of wave (light/sound)

Question 3

what in a wave does intensity depend on?

Answer 3

amplitude and the distance from the sound source

Question 4

a unit that compares intensity of different sounds

Answer 4

decibles dB

Question 5

loudness

Answer 5

physical response to the intensity of sound

Question 6

pitch

Answer 6

the frequency of the sound as you percieve it

Question 7

infrasound

Answer 7

sound at frequencies lower than most people can hear

Question 8

ultrasound

Answer 8

sound at frequencies higher than most people can hear

Question 9

speed of light

Answer 9

3 x 10^8 m/s

Question 10

what is the speed of sound in air

Answer 10

343 m/s

Question 11

electromagnetic waves

Answer 11

transverse waves consisting of changing mechanical fields (electric, magnetic)

Question 12

doppler effect

Answer 12

shift in energy wavelengths from an energy source moving toward/away from observer