« previous next »

Author Question: A star more massive than the Sun will have A) an identical lifetime as the Sun because although ... (Read 31 times)

mmm

  • Hero Member
  • *****
  • Posts: 558
on: Jul 27, 2018
A star more massive than the Sun will have
 
  A) an identical lifetime as the Sun because although its overall mass is higher, the mass of its nuclear burning core is the same
  B) a longer lifetime because it has more fuel to burn
  C) a shorter lifetime because although its overall mass is higher, the mass of its nuclear burning core is smaller
  D) a shorter lifetime because its central core is hotter and denser

Question 2

Why do the oldest stars we observe contain almost nothing but hydrogen and helium?
 
  What will be an ideal response?


tofugiraffe

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

This first generation of stars must be made of the elements produced in primordial nucleosynthesis, which had time only to turn 25 of the hydrogen into helium.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Did you know?

Your heart beats over 36 million times a year.

Betelgeuse star (Hubble) Betelgeuse star (Hubble)
Shooting star Shooting star
Spectral Line Motion in Binary Star Systems Spectral Line Motion in Binary Star Systems
A Summary of the Star Formation Process A Summary of the Star Formation Process
In 1891 William Dean Howells championed the poetry of Emily Dickinson: “This poetry is as characteri In 1891 William Dean Howells championed the poetry of Emily Dickinson: “This poetry is as characteri
A star link-type network where all of the modules are connected together using splice packs. A star link-type network where all of the modules are connected together using splice packs.
Video: Primary and secondary response to infection

For a complete list of videos, visit our video library