Author Question: Why is Neptune denser than Saturn? A) It has a different composition than Saturn, including a ... (Read 32 times)

urbanoutfitters · **on:** Jul 27, 2018

Why is Neptune denser than Saturn?

A) It has a different composition than Saturn, including a higher proportion of hydrogen compounds and rocks.
B) It has a greater proportion of hydrogen than Saturn.
C) The extra mass of Neptune compresses its interior to a greater extent than that of Saturn.
D) Its hydrogen is molecular, whereas Saturn's hydrogen is atomic.
E) It is not denser than Saturn.

Question 2

If the distance between us and a star is doubled, with everything else remaining the same, the luminosity

A) is decreased by a factor of four, and the apparent brightness is decreased by a factor of four.
B) is decreased by a factor of two, and the apparent brightness is decreased by a factor of two.
C) remains the same, but the apparent brightness is decreased by a factor of two.
D) remains the same, but the apparent brightness is decreased by a factor of four.
E) is decreased by a factor of four, but the apparent brightness remains the same.