The Doppler Effect

What is the time interval between waves passing called?

• frequency

• pitch

• period

• wavelength

Tags

NGSS.HS-PS4-1

Long sound waves are...

• high pitched
• low pitched
• medium pitched

Tags

NGSS.HS-PS4-1

Short sound waves are...

• high pitched
• low pitched
• medium pitched

Tags

NGSS.HS-PS4-1

What can you tell about the motion of this object?

• Moving left.
• Moving right quickly.
• Standing still. 
• Moving up slowly. 

Tags

NGSS.HS-PS2-1

What can you tell about this object's motion?

• Moving to the North (up).
• Moving to the South (down). 
• Moving to the West (left). 
• Moving to the East (right). 

What best describes the doppler effect?

• An apparent change in frequency of a wave due to the relative motion between a wave source and an observer
• When sound changes pitch
• When light changes color
• An apparent change in the amplitude of a wave due to the relative motion between a wave source and an observer.

When the car moves AWAY from you, its horn seems...

• Low pitched
• High pitched
• Normal

Tags

NGSS.HS-PS4-1

When an ambulance move TOWARD you it sounds ________ pitched. 

• high
• low
• medium

Tags

NGSS.HS-PS4-1

In order to make his music sound lower in pitch, roller baby could (select all correct answers)

• skate away from the boombox

• skate towards the boombox

• push the boombox away from him

• have someone push the boombox towards him

• drop the bass

Tags

NGSS.HS-PS4-1

Which situation will result in the highest observed frequency?

• Observer moves at 20 m/s towards sound source.

  Sound source is motionless.

• Observer moves at 20 m/s towards sound source.

  Sound source moves at 20 m/s towards the observer.

• Observer is motionless.

  Sound source moves at 20 m/s towards the observer.

• Observer is motionless.

  Sound source moves 20 m/s away from the observer.

Tags

NGSS.HS-PS4-1