Astronomy Spectroscopy Doppler

How does the Big Bang Theory explain observations of the Doppler effect in the universe?

• Galaxies make lots of sound waves. 
• Galaxies are blue shifted and moving toward us.
• Galaxies are redshifted and moving away from us. 
• No connection. Light waves aren't visible in the universe. 

Tags

NGSS.HS-ESS1-2

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

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

When light from the galaxy in Andromeda is analysed, it is found that the wavelengths are shorter than expected. This tells us that the galaxy is

• moving towards us
• moving away from us
• a very distant galaxy
• rotating on its axis

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

The wavelength of a line in the spectrum produced by a distant star is found to be shorter than the wavelength of the corresponding line in the spectrum produced by the Sun. This is because the distant star is

• cooler than the Sun
• hotter than the Sun
• moving away from the Earth
• moving towards the Earth

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-1

When light from a distant star reaches us on Earth, its wavelength appears shifted towards the red end of the spectrum. This is because

• the distance travelled by each successive wave has increased

• the frequency of the light emitted has decreased

• the speed of the star has increased

• the star is emitting longer wavelengths

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
• 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 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

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-ESS1-4

NGSS.HS-PS4-3