WorksheetsDoppler Effect
Total questions: 42
Worksheet time: 1hrs 24mins
What is the Doppler effect?
The observed change in frequency of sound or light because of the relative motion of a wave source and the observer.
The observed change in amplitude of sound or light because of the relative motion of a wave source and the observer.
The observed change in wave speed of sound or light because of the relative motion of a wave source and the observer.
The observed change in equilibrium position of sound or light because of the relative motion of a wave source and the observer.
What is the Doppler Effect?
A change in frequency due to the relative motion of a wave source and an observer
When a wave overlaps with another wave
When a wave bounces off of another object
When a wave bends due to traveling through a different medium
An ambulance is driving towards you as you stand on the sidewalk. What happens to the pitch of the siren as it comes towards you?
It increases
It decreases
You are driving in a car and honk the horn at a person standing in the street. As you approach the person, what happens to the pitch of the horn according to you in the car?
It increases
It decreases
It stays the same because you are in the car moving with the sound.
Light can change color due to the Doppler Effect.
True
False
You are standing on the side of the road when a police car races past you with its siren on. After the police car passes you, what happens to the pitch of the siren?
It increases
It decreases
It turns red
An astronomer looks at a star in the night sky. Based on his calculations the star's light is shifting towards the color blue. What does this mean about the star?
It's moving towards the astronomer
It's moving away from the astronomer
It's not moving at all
Look at the picture. Who is experiencing a higher pitched sound?
Observer A
Observer B
There's no difference
Look at the picture. Who is experiencing a lower pitched sound?
Observer A
Observer B
There is no difference
The phases of matter sound can travel through (check all that apply)
solid
liquid
gas
space
Which type of wave travels faster through the air?
sound
light
The higher the pitch, the _____ the wavelength and the ____ the frequency.
shorter, higher
shorter, lower
longer, higher
longer, lower
What is Sheldon demonstrating?
(a)
What is the doppler effect?
a change in the frequency of sound, light or other waves to cause a change in pitch
A change in pitch that causes frequency, sound, light and other waves to disappear
I have no idea
A change in sound that alters frequency
What is the doppler effect used for?
police radars
to track storms
to be loud
to communicate with other countries
What can the Doppler effect be experienced with?
Water
Any type of wave
Sound, Pitch, and Frequency
Frequency
when a noise is moving towards an observer, the closer it comes...
the lower the pitch
the longer the noise
the higher the pitch
the quieter the noise
the doppler effect causes a shift in...
pitch
wavelength
frequency
All of the above
when the frequency is higher what happens to the wavelength?
the wavelength gets longer
The wavelength gets shorter
the wavelength doesn't change
I have no idea
What is Redshift
Objects move away us, give off red light
Objects move towards us, give off blue light
Objects move towards us, give off red light
Objects move away us, give off blue light
What is Blueshift
Objects move away us, give off red light
Objects move towards us give off blue light
Objects move away us, give off blue light
Objects move towards us, give off red light
Blueshift frequency
Is increasing
Stays the same
Blueshift has no frequency
decreases
Redshift wavelength
doesn't change
stays the same
Gets longer/increases
gets shorter/decreases
