1. What do you notice about the spectrum of the stationary galaxy compared to the spectrum of the galaxy in motion when the distance is stationary?

Question

*
1 point
It is exactly the same.
The spectrum shifts to the left, towards blue.
The spectrum shifts to the right, towards red.
2. Change the distance to "Farther". What do you notice about the spectrum of the stationary galaxy compared to the spectrum of the galaxy in motion now?
*
1 point
It is exactly the same.
The spectrum shifts to the left, towards blue.
The spectrum shifts to the right, towards red.
3. Change the distance to "Closer". What do you notice about the spectrum of the stationary galaxy compared to the spectrum of the galaxy in motion now?
*
1 point
It is exactly the same.
The spectrum shifts to the left, towards blue.
The spectrum shifts to the right, towards red.
Now click on "Explore Further" at the bottom of this page.

Click on each Galaxy and answer the questions below about each one:

4. Analyze Spectral Shift: Galaxy 1. What type of spectral shift is observed?
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1 point
no shift
blue shift
red shift
green shift
5. Analyze Spectral Shift: Galaxy 2. What type of spectral shift is observed?
*
1 point
no shift
blue shift
red shift
green shift
6. Analyze Spectral Shift: Galaxy 3. What type of spectral shift is observed?
*
1 point
no shift
blue shift
red shift
purple shift
7. Analyze Spectral Shift: Galaxy 4. What type of spectral shift is observed?
*
1 point
no shift
blue shift
red shift
purple shift

Answer 1

Here are the likely answers based on the concepts of redshift and blueshift in astronomy:

1. Spectrum of stationary galaxy vs. galaxy in motion (stationary distance):
   Answer: It is exactly the same.
   (When both galaxies are stationary relative to each other, their spectra do not shift.)

2. Spectrum of stationary galaxy vs. galaxy in motion (Farther away):
   Answer: The spectrum shifts to the right, towards red.
   (If the galaxy in motion is moving away, this results in redshift.)

3. Spectrum of stationary galaxy vs. galaxy in motion (Closer):
   Answer: The spectrum shifts to the left, towards blue.
   (If the galaxy in motion is moving closer, this results in blueshift.)

4. Analyze Spectral Shift: Galaxy 1:
   Answer: red shift
   (If the galaxy is moving away, it will exhibit a redshift.)

5. Analyze Spectral Shift: Galaxy 2:
   Answer: blue shift
   (If the galaxy is moving closer, it will exhibit a blueshift.)

6. Analyze Spectral Shift: Galaxy 3:
   Answer: no shift
   (If there is no change in distance, the spectrum shows no shift.)

7. Analyze Spectral Shift: Galaxy 4:
   Answer: red shift
   (If the galaxy is moving away from us, it will exhibit redshift.)

Please adjust specific answers based on the actual observations you see if this is part of an interactive exploration.