What happens to sound waves from an object as it moves toward you?(1 point)
Responses
The pitch gets higher because of an increase in wavelength.
The pitch gets higher because of an increase in wavelength.
The pitch gets lower because of an increase in frequency.
The pitch gets lower because of an increase in frequency.
The pitch gets higher because of an increase in frequency.
The pitch gets higher because of an increase in frequency.
The pitch gets lower because of an increase in wavelength.
The pitch gets higher because of an increase in frequency.
Which combination of frequencies would produce the lowest beat frequency?(1 point)
Responses
500 Hz and 501 Hz
500 Hz and 501 Hz
500 Hz and 600 Hz
500 Hz and 600 Hz
10 Hz and 20 Hz
10 Hz and 20 Hz
10 Hz and 15 Hz
10 Hz and 15 Hz
A sound has a higher pitch than a bell. Which quantity must also be higher in this sound than in the bell?(1 point)
Responses
amplitude
amplitude
speed
speed
wavelength
wavelength
frequency
frequency
Which statement regarding sound traveling in air is correct?
(1 point)
Responses
A wave with a shorter wavelength is always faster than one with a longer wavelength.
A wave with a shorter wavelength is always faster than one with a longer wavelength.
The frequency of a sound does not affect the speed at which it travels.
The frequency of a sound does not affect the speed at which it travels.
A loud sound travels faster than a quiet sound.
A loud sound travels faster than a quiet sound.
As the wavelength increases, the frequency also increases.
As the wavelength increases, the frequency also increases.
Skip to navigation
As the wavelength increases, the frequency also increases.
Which statement about the effect of temperature on the speed of sound is correct?(1 point)
Responses
Changes in temperature have no effect on the speed of sound.
Changes in temperature have no effect on the speed of sound.
As temperature increases, the speed of sound increases because the medium becomes denser.
As temperature increases, the speed of sound increases because the medium becomes denser.
As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
As temperature increases, the speed of sound increases because molecules in the medium collide more frequently.
As temperature increases, the speed of sound decreases because molecules in the medium collide less frequently.