Doppler and Redshift Review

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.

Tags

NGSS.HS-PS4-1

If a star is being observed from Earth and it's light has shifted towards the red side of the electromagnetic spectrum it would be...

• Moving towards the Earth

• Moving away from the Earth

• This is a trick question that cannot be answered

• It isn't a star, it is a very large blueberry.

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

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

The diagrams below represent spectral lines of hydrogen gas observed in a laboratory and the spectral lines of hydrogen gas observed in the light from a distant star. Compared to the spectral lines observed in the laboratory, the spectral lines observed in the light from the distant star have shifted toward the

• (1) red end of the spectrum, indicating the star’s movement toward Earth 

   

   

• (2) red end of the spectrum, indicating the star’s movement away from Earth

• (3) blue end of the spectrum, indicating the star’s movement toward Earth

• (4) blue end of the spectrum, indicating the star’s movement away from Earth

Tags

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

NGSS.HS-PS4-1

A shift toward longer wavelengths of the spectral lines emitted by a celestial object that is caused by the object moving away from the earth.

• White Shift

• Black Shift

• Blue Shift

• Red Shift

Tags

NGSS.HS-PS4-1

The term "red shift" means objects are

• moving towards you

• not moving

• moving away from you

• circling a central location

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

If something that makes light is moving AWAY from you, it spreads the wavelengths of light out. This application of the Doppler effect is known as ___.

• blue shift

• green shift

• red shift

• black shift

Tags

NGSS.HS-ESS1-2

An object that is moving VERY fast away from Earth would have ________ than an object that is moving very slow away from Earth.

• More Redshift

• More Blueshift

• Less Redshift

• Less Blueshift

Tags

NGSS.HS-ESS1-2