Author Question: Most of the atoms in the universe are thought to be A) hydrogen. B) helium. C) about equal ... (Read 147 times)

D2AR0N

  • Hero Member
  • *****
  • Posts: 561
Most of the atoms in the universe are thought to be
 
  A) hydrogen.
  B) helium.
  C) about equal amounts of hydrogen and helium.
  D) iron.
  E) elements unknown at present.

Question 2

What event marks the birth of a star, and what event marks its death?
 
  What will be an ideal response?



leeeep

  • Sr. Member
  • ****
  • Posts: 315
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A stellar body becomes a star when thermonuclear fusion is ignited in its core. Death occurs when its nuclear fires go outwhen nuclear fusion ceases.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

leeeep

  • Sr. Member
  • ****
  • Posts: 315

 

Did you know?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

For a complete list of videos, visit our video library