Author Question: It is believed that a giant impact may have taken away some of Mercury's low-density crustal rock ... (Read 67 times)

wrbasek0 · **on:** Jul 27, 2018

It is believed that a giant impact may have taken away some of Mercury's low-density crustal rock and left a small, dense world with a(n) large, dense, and _______________ core.

Fill in the blank(s) with correct word

Question 2

____ supernovae are caused by the collapse of an iron core in a high mass star.

a. Only type Ia
b. Only type Ib
c. Only type II
d. type Ia and type II
e. type Ib and type II