This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Helium fusion within a star begins A) after all the hydrogen within the star has been depleted. ... (Read 64 times)

jparksx

  • Hero Member
  • *****
  • Posts: 570
on: Jul 29, 2018
Helium fusion within a star begins
 
  A) after all the hydrogen within the star has been depleted.
  B) when all carbon has been depleted.
  C) because of the force of gravity.
  D) with the expulsion of practically all hydrogen.

Question 2

A main sequence star begins transforming into a red giant when
 
  A) helium begins fusing.
  B) helium within the core begins to expand.
  C) contracting helium causes hydrogen to fuse.
  D) hydrogen starts fusing within the core.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

rekilledagain

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: C


jparksx

  • Member
  • Posts: 570
Reply 2 on: Jul 29, 2018
Wow, this really help

lkanara2

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Star-Nosed Mole Star-Nosed Mole
Hydrogen Bond Hydrogen Bond
The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ... The WISER entry for hydrogen cyanide (bottom). Useful information includes detailed health ...
A sea star A sea star
Hydrogen Peroxide and Nitric Oxide Hydrogen Peroxide and Nitric Oxide
Sea Star Body Plan Sea Star Body Plan
Video: Introduction to Spirometry

For a complete list of videos, visit our video library