Waves Doppler
Authored by Charles Martinez
Physics
9th Grade
NGSS covered
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13 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
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.
Tags
NGSS.HS-PS4-1
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
You stand on the sidewalk next to the street. A fire truck is moving towards you. The frequency of the siren on the fire truck is 600 Hz.
What should you hear?
Frequency higher than 600 Hz
Frequency lower than 600 Hz
Exactly 600 Hz
No sound, silence.
Tags
NGSS.HS-PS4-1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
You stand on the sidewalk next to the street. A fire truck is moving away from you. The frequency of the siren on the fire truck is 600 Hz.
What should the firemen on the truck hear?
Frequency higher than 600 Hz
Frequency lower than 600 Hz
Exactly 600 Hz
No sound, silence.
Tags
NGSS.HS-PS4-1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A car moves at 20 m/s towards a whistle. The whistle is stationary. The whistle makes a sound with a frequency of 500 Hz. The speed of sound in air is 330 m/s.
What is the frequency observed by the driver of the car?
530 Hz
470 Hz
520 Hz
480 Hz
Tags
NGSS.HS-PS4-1
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A car moves at 20 m/s away from a whistle. The whistle is stationary. The whistle makes a sound with a frequency of 500 Hz. The speed of sound in air is 330 m/s.
What is the frequency observed by the driver of the car?
530 Hz
470 Hz
520 Hz
480 Hz
Tags
NGSS.HS-PS4-1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A fire truck is moving towards you. The fire truck moves with a speed of 30 m/s. You are motionless. The siren on the fire truck makes a sound with a frequency of 700 Hz. The speed of sound in air is 350 m/s.
What frequency will you hear?
765 Hz
730 Hz
660 Hz
645 Hz
Tags
NGSS.HS-PS4-1
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sound waves are what kind of wave?
Tags
NGSS.HS-PS4-1
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