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

Author Question: What can we learn about a star from a life track on an H-R diagram? A) the star's age B) the ... (Read 16 times)

acc299

  • Hero Member
  • *****
  • Posts: 569
on: Jul 27, 2018
What can we learn about a star from a life track on an H-R diagram?
 
  A) the star's age
  B) the surface temperature and luminosity the star will have at each stage of its life
  C) the star's current stage of life
  D) how the star's distance from Earth varies at different times in its life

Question 2

The heavy bombardment phase of the solar system lasted
 
  A) several million years.
  B) several tens of millions of years.
  C) several hundreds of millions of years.
  D) about a billion years.
  E) to the present time.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

carolinefletcherr

  • Sr. Member
  • ****
  • Posts: 313
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

C


acc299

  • Member
  • Posts: 569
Reply 2 on: Jul 27, 2018
:D TYSM

bigsis44

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Alternation of generations, the plant life cycle Alternation of generations, the plant life cycle
Life cycle of moss Life cycle of moss
Facultative Anaerobe Diagram Facultative Anaerobe Diagram
Many children learn not to express prejudice overtly but may feel it implicitly. Many children learn not to express prejudice overtly but may feel it implicitly.
Signs of Pregnancy: Preggo Life Signs of Pregnancy: Preggo Life
A diagram of chromosome 13, showing the retinoblastoma (RB1) locus A diagram of chromosome 13, showing the retinoblastoma (RB1) locus
Video: Cortisol (protein catabolism, gluconeogenesis, vasoconstriction & anti-inflammation)

For a complete list of videos, visit our video library