Question

question 12
blue main sequence stars have __________ than red main sequence stars.
more mass and a longer lifetime
less mass and a shorter lifetime
more mass and a shorter lifetime
less mass and a longer lifetime

Explanation:

Blue main - sequence stars are hotter and more massive than red main - sequence stars. The higher the mass of a star, the faster it burns through its fuel (nuclear fusion). Since blue stars have more mass, they consume their hydrogen (fuel for main - sequence stars) at a much quicker rate. So, they have a shorter lifetime compared to red main - sequence stars which are less massive and burn their fuel more slowly.

Answer:

more mass and a shorter lifetime