Author Question: From hottest to coolest, the order of the spectral types of stars is ________. A) OBAGFKM B) ... (Read 60 times)

oliviahorn72 · **on:** Jul 27, 2018

From hottest to coolest, the order of the spectral types of stars is ________.

A) OBAGFKM B) ABCDEFG C) ABFGKMO D) OBAFGKM E) OMKGFBA

Question 2

Which statement about our core is FALSE?

A) It must be rich in both iron and nickel.
B) Its magnetic field generates the protective Van Allen radiation Belts.
C) It generates a stable and permanent magnetic field much as a regular bar magnet.
D) It is almost as hot as the Sun's glowing surface, the photosphere.
E) The seismic data indicates the outer portion is liquid, the inner part solid.