When will a scientist observe redshift in the spectrum of a distant space object?(1 point)
> when the object is moving away from the scientist
> when the object is stationary
> when the object is moving toward the scientist
> when the object is in the same frame of reference as the scientist
Since nobody wants to help, I will. The answers are-
Observer A and Observer B are moving at different speeds relative to each other.
Observer A is stationary and Observer B is moving.
When the object is moving away from the scientist.
Light wave frequencies increase as an object moves toward the observer.
I know it's EXTREMELY late- but it'll help everyone else who comes on this question!
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A scientist will observe redshift in the spectrum of a distant space object when the object is moving away from the scientist. This phenomenon is known as the Doppler effect. The Doppler effect refers to the change in the frequency or wavelength of a wave (such as light) due to the relative motion between the source of the wave and the observer.
When an object is moving away from the observer, the wavelength of the light it emits gets stretched or "redshifted." This means that the observed light will have a longer wavelength and lower frequency compared to when the object is stationary or moving toward the observer.
To determine the redshift of a distant space object, scientists analyze the spectrum of light emitted from that object. They look for shifts in the characteristic features or absorption lines of different wavelengths in the spectrum. A redshift indicates that the object is moving away from the observer, while a blueshift indicates that the object is moving toward the observer.
Therefore, when observing the spectrum of a distant space object, a scientist will observe redshift if the object is moving away from them.