Doppler Shift

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

Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.

• It is not moving relative to Earth

• It is moving away from Earth (Redshift)

• It is moving towards Earth (Blueshift)

• It is moving towards Earth (Redshift)

Tags

NGSS.HS-PS4-3

Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.

• It is not moving

• It is moving away from Earth (Redshift)

• It is moving towards Earth (Blueshift)

• It is moving towards Earth (Redshift)

Tags

NGSS.HS-PS4-3

Explain how the Doppler effect can be used to determine the speed of a moving object, such as a car.

• By measuring the change in volume of the sound.

• By measuring the change in frequency of the sound.

• By measuring the change in amplitude of the sound.

• By measuring the change in wavelength of the sound.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

What is the effect of the Doppler effect on the sound of a car horn as the car approaches and then moves away from an observer?

• The sound remains constant

• The sound decreases in frequency as it approaches

• The sound increases in frequency as it approaches and decreases as it moves away

• The sound increases in amplitude as it moves away

Tags

NGSS.HS-PS4-1

Explain how the Doppler effect can be used in medical imaging.

• By measuring changes in blood pressure.

• By measuring changes in blood flow velocity.

• By measuring changes in body temperature.

• By measuring changes in heart rate.

Tags

NGSS.HS-PS4-5

Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.

• It is not moving relative to Earth

• It is moving away from Earth (Redshift)

• It is moving towards Earth (Blueshift)

• It is moving towards Earth (Redshift)

Tags

NGSS.HS-PS4-3

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

NGSS.HS-PS4-5

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