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

Author Question: Which of the following statements is true of reflection nebulae? A) They have a distinctive blue ... (Read 105 times)

debasdf

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
Which of the following statements is true of reflection nebulae?
 
  A) They have a distinctive blue color.
  B) The gases in reflection nebulae are excited to emit photons.
  C) The spectrum of a reflection nebula is not the reflected absorption spectrum of starlight.
  D) They are produced when a hot star excites the gas to produce an emission spectrum.

Question 2

_____ is a series of three nuclear reactions that builds a helium nucleus by adding protons one at a time.
 
  A) The proton-neutron chain
  B) The helium proton chain
  C) The proton-proton chain
  D) The hydrogen-helium chain


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ebonylittles

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

C


debasdf

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
Excellent

scikid

  • Member
  • Posts: 300
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

There are 20 feet of blood vessels in each square inch of human skin.

Did you know?

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

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

A king cheetah showing its distinctive coat pattern A king cheetah showing its distinctive coat pattern
The sparse plasma (blue) and dust (white) in the tail of comet Hale–Bopp are being The sparse plasma (blue) and dust (white) in the tail of comet Hale–Bopp are being
Blue light is scattered more than other wavelengths by the gases in the atmosphere, giving the Earth Blue light is scattered more than other wavelengths by the gases in the atmosphere, giving the Earth
Blue Flowers Blue Flowers
A gradient of bicoid mRNA (blue stain) as concentrated in anterior region A gradient of bicoid mRNA (blue stain) as concentrated in anterior region
Video: Prone Position

For a complete list of videos, visit our video library