Author Question: Spectra are often represented as graphs of: A) distance versus luminosity. B) temperature ... (Read 48 times)

chandani · **on:** Jul 27, 2018

Spectra are often represented as graphs of:

A) distance versus luminosity.
B) temperature versus density.
C) intensity versus wavelength.
D) brightness versus darkness.

Question 2

In the context of a star's spectrum, which of the following statements is true of a giant star?

A) Hydrogen atoms in its atmosphere do not often collide with each other.
B) Its atmosphere is very dense.
C) Its spectrum has very broad spectral lines.
D) Energy levels are not distorted when atoms in its atmosphere collide.