4 Written questions
4 Multiple choice questions
hot gases pass through cooler gases and absorb wavelengths of the spectrum. It shows up as dark lines on a colored background.
spectrum of bright lines on a dark background/given off by elements heated to a gas/how the color is put in fireworks
an instrument used to study the spectrum of a star
objects that are closer seem to move more than objects farther away
3 True/False questions
groups of stars that form a picture or pattern
an object that separates visible light into its different wavelengths
apparent magnitude → how bright a star really is.