This topic contains a solution. Click here to go to the answer

Author Question: In a large sampling of stars, the largest group represented in the H-R diagram will be the main ... (Read 82 times)

jessicacav

  • Hero Member
  • *****
  • Posts: 558
In a large sampling of stars, the largest group represented in the H-R diagram will be the main sequence stars. Why are they so common?
 
  What will be an ideal response?

Question 2

The Caloris Basin on Mercury covers a large region of the planet, but few smaller craters have formed on top of it. From this we conclude that
 
  A) erosion destroyed the smaller craters that formed on the basin.
  B) Mercury's atmosphere prevented smaller objects from hitting the surface.
  C) only very large impactors hit Mercury's surface in the past.
  D) the Caloris Basin formed toward the end of the solar system's period of heavy bombardment.
  E) the Caloris Basin was formed by a volcano.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jaaaaaaa

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

Like the Sun, they are young enough to have most of their initial hydrogen still not fused into helium; they will not evolve off the main sequence until the helium builds up a lot. Since hydrogen is by far the most abundant element and the easiest to fuse, most stars are going to use it as their major fuel, as long as the supply lasts. Stars spend the vast majority of their life spans on the main sequence.

Answer to Question 2

D




jessicacav

  • Member
  • Posts: 558
Reply 2 on: Jul 27, 2018
:D TYSM


hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

For a complete list of videos, visit our video library