Doppler Problems

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-PS4-1

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 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

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

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

Which discovery(ies) came from our understanding redshift/ blueshift?

• The universe is expanding

• Most galaxies are moving away from us

• Andromeda galaxy will collide with the Milky way in 3.75 billion years

• All of the above (and many more)

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

When a car moves towards you, the sound of its horn seems relatively...

• Low pitched

• High pitched

• Normal

Tags

NGSS.HS-PS4-1