Most stars are hot objects surrounded by cooler atmospheres.The spectrum of such a star is a
A)continuous band of light.
B)band of light crossed by brighter lines.
C)band of light crossed by dark lines.
D)series of bright lines.

Question

Quizplus · Accepted Answer

Most stars have a relatively cool outer layer known as the photosphere, which is responsible for producing a spectrum crossed by dark lines, known as an absorption spectrum. These dark lines represent areas where specific wavelengths of light have been absorbed by the elements present in the star's atmosphere. Therefore, the best choice for the spectrum of a hot star surrounded by a cooler atmosphere is a band of light crossed by dark lines, option C.

Most Stars Are Hot Objects Surrounded by Cooler Atmospheres