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 83 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
YES! Correct, THANKS for helping me on my review


coreycathey

  • Member
  • Posts: 333
Reply 3 on: Yesterday
Gracias!

 

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

For a complete list of videos, visit our video library