Question

1. a star that forms iron through the process of nucleosynthesis does so mainly based on the stars (1) mass (2) luminosity value (3) color (4) surface temperature 4 _ 5. the luminosity and temperature of the model star can be described as (1) having a luminosity value less than that of our sun, but at a higher temperature. (2) having a luminosity value less than that of our sun, but at a lower temperature. (3) having a luminosity value greater than that of our sun, but at a lower temperature. (4) having a luminosity value greater than that of our sun, but at a temperature always hotter than our sun. 5 _ 6. of the elements shown, name the element that will not undergo nucleosynthesis. _ 7. state the name of the gas that fuels nucleosynthesis for most of a stars life. _ 8. when silicon is first produced, what is the estimate life - span that remains for the star? ___

Explanation:

1. Only high - mass stars can form iron through nucleosynthesis, so it depends on mass.
2. Without specific information about the model star, we can't accurately determine, but we analyze based on general star knowledge. For 6, elements heavier than iron don't undergo normal nucleosynthesis in stars. For 7, hydrogen is the main fuel for most of a star's life. For 8, when silicon is produced, the star is near the end of its life, usually a very short time left.

Answer:

1. (1) mass
2. No answer can be given without more info
3. Elements heavier than iron (not shown in the question, but in general)
4. Hydrogen
5. A very short time (usually days - weeks for a high - mass star)