Select the correct answer from each list.(2 points)
When a vibrating object is moving ____ an observer, the measured frequency of the vibrations will be lower than if the object and observer are both stationary. If the vibrating object is moving ____ an observer, the measured frequency of the vibrations will be higher than the actual rate of vibration of the object. When a star is moving towards an observer on Earth, the light spectrum of the star will appear _____ compared to the light spectrum of the sun, which is considered to be in Earth's frame of reference.
the first two are either Towards, alongside, and away from.
the last one is redshift, the same, blueshift.
