If the universe were contracting, what would happen to light from other galaxies as it reached earth?
a. it would be brighter
b. it would be shifted
c. it would be blue shifted
d. it would be dimmer

The correct answer is C-  It would be blue shifted.  A blue shift in light from stars means the stars are moving closer. The term blueshift is used when visible light is shifted toward higher frequencies or toward the blue end of the spectrum, and the term redshift is used when light is shifted toward lower frequencies or toward the red end of the spectrum.   Hope I helped!

The correct answer is "it would be blue shifted".

Step-by-step explanation:

Red shift: The light changes when the object in space moves away from us then the light is shifted to red end. In this case, the light is shifted to longer wavelength which is red.  It is more common as most objects in the universe are moving from us.

Blue shift: The light changes when the object in space moves towards from us then the light is shifted to blue end. In this case, the light is shifted to shorter wavelength which is blue.  It is created by shrinking the space.

In the given problem, if the Universe were contracting then the light from the other galaxies as it reached Earth. It would be blue shifted as the universe is contracting.

Therefore, the correct option is (C).

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step-by-step explanation:

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.