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26 questions
How high or low a sound is; depends on the frequency
pitch
frequency
sound
medium
When the sound source moves, the frequency changes. Which is a correct example?
A police car siren sounding lower pitched after the car passes you.
A police car siren sounding louder after the car passes you.
A police car siren sounding higher pitched after the car passes you.
A police car siren sounding quieter after the car passes.
A soft sound has a _________ amplitude and a loud sound has a _____________ amplitude.
large, small
small, large
Sound spreads out as it travels away from the source. The further away you are from the source, the quieter it sounds. This is due to:
intensity
a change in frequency
a change in amplitude
the Doppler effect
A low frequency sound will have a ____________ wavelength.
long
short
The volume of a sound (how loud it is) depends on the wave's
Frequency
Amplitude
Wavelength
If someone has a very deep voice, the sound waves they produce when talking would have a low frequency.
True
False
As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is is called:
resonance.
shock waves.
the Doppler effect.
echolocation.
Which of these sound waves has the highest frequency?
Which sound wave has the lowest pitch?
What is changed from the first to the second picture?
Someone is talking louder in picture 2
Someone is talking quieter/softer in picture 2
Someone is talking with a lower pitch in picture 2
Someone is talking with a higher pitch in picture 2
The students in the diagram are communicating with the cans and string.
Which is the most likely explanation of how the students can hear and communicate using the objects?
the mechanical wave transfers sound through the string
sound bounces off the can and echoes
sound travels through the string as an electromagnetic wave
diffraction
In which state of matter does sound travel the slowest?
Solid
Liquid
Gas
Which of the following affect the speed of sound?
density, elasticity, and temperature
wavelength
frequency
intensity
When comparing the two waves that are shown, how would Wave A (green wave) differ from Wave B (black wave)?
Wave A and B have the same amplitude, but wave B (black) has a lower pitch.
Wave A and B have the same amplitude, but Wave A has a lower pitch.
Wave A and B have the same pitch, but Wave A is a quieter/softer sound.
Wave A and B have the same pitch, but Wave B is a quieter/softer sound.
Which sound wave shows the loudest sound?
they all have the same loudness/volume
Which sound wave shows the loudest sound?
they would all have the same volume
Which wave has the highest volume?
Which wave shows a lower pitch and a lower volume?
Soft surfaces _______ sound waves.
Reflect
Absorb
Diffract
Refract
Which wave has a higher pitched sound?
A
B
Which wave has more energy?
A, due to its higher frequency
B, due to its higher amplitude
A, due to its higher amplitude
B, due to its higher frequency
When the sound source moves, the frequency changes. Which is a correct example? A police car with its siren on passes you:
The siren sounds lower pitched after it passes you.
The siren sounds louder after it passes you.
The siren sounds higher pitched after it passes you.
The siren sounds quieter after it passes.
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