1. On an H-R Diagram, what is the main sequence?

Were most of the stars are in a band.

2. What percentage of stars are main sequence stars?

90 % of the stars are in the main sequence

3. Is the Sun a main sequence star?

yes

4. What will happen to the Sun next?

The sun will become a red gaint

When will this happen?

In a few billion years

5. Include a picture of an H-R Diagram. Explain it.

To the right the red stars are colder

to the left the blue stars are hot