1. Choose the scenario under which each of the following Dopplershift effects will be seen:
choices are:
The source and observer are approaching one another
The source and observer are moving away from one another
The source and observer are stationary relative to oneanother
1.1 Light is shifted towards the blue end of the spectrum(blue-shifted).
1.2 The apparent pitch of the source is lower than the actualpitch of the source.
1.3 There is no apparent change in the pitch or color.
1.4 Light is shifted towards the red end of the spectrum(red-shifted).
1.5The apparent pitch of the source is higher than the actualpitch of the source.
2.Sounds coming from moving objects, such as the siren of anemergency vehicle, appear to change pitch as the object movestoward or away from you. Compare the frequency of a siren based onits motion toward or away from you.
rate from  highest to lowest
away from you 31 miles per hour
toward you at 34 miles per hour
away from you at 34 miles per hour
toward you at 55 miles per hour
neither toward nor away from you
toward you at 3 miles per hour
