G What are two ways the moon's
appearance changes over time?
F It changes speed and brightness in
the sky
It changes orbit and brightness in
the sky.
H It changes speed and position in the
sky.
It changes phase and position in the
sky.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.