T R U E O R F A L S E ? Questions
1 ) the sun is almost entirely composed of hydrogen and hellium?
2 ) a parsec is a greater distance than a light year ?
3 ) stars more massive than the sun use up their fuel at a slower rate?
4 ) the corona is visible only during eclipse because it is the coolest layer of the sun's atmosphere ?
5 ) when hydrogen nuclei fuse they produce helium ?
6 ) the state of matter found in the sun's interior is plasma ?
7 ) scientists gather evidence about the sun's composition by directly sampling material from the sun ?