The Doppler Effect

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

• Low pitched
• High pitched
• Normal

When an ambulance move TOWARD you it sounds ________ pitched. 

• high
• low
• medium

Tags

NGSS.MS-PS4-1

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 do the light waves of a galaxy that is moving TOWARD us look like?

• red shifted
• blue shifted
• green shifted
• yellow shifted

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What do the light waves of a galaxy that is moving AWAY from us look like?

• red shifted
• blue shifted
• green shifted
• yellow shifted

Tags

NGSS.HS-ESS1-2

The vast majority of galaxies in our universe are moving away from us.  We know this because we observe __________ in the galaxies absorption spectra.

• Redshift
• Blueshift
• Turbulance
• Superposition

Tags

NGSS.HS-ESS1-2

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

The Doppler effect is seen when a wave-making source moves toward an observer. 

• True
• False

Tags

NGSS.HS-PS4-1

Look at the picture. Who is experiencing a lower pitched sound?

• Observer A

• Observer B

• There is no difference

Tags

NGSS.MS-PS4-2

What can you tell about the motion of this object?

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

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1