How is a newborn star formed? For the answer to this question, we must

Question

How is a newborn star formed? For the answer to this question, we must look to the familiar physical concept of gravitational instability. It is a simple concept, long known to scientists, having been first recognized by Isaac Newton in the late 1600s.

Let us envision a cloud of interstellar atoms and molecules, slightly admixed with dust. This cloud of interstellar gas is static and uniform. Suddenly, something occurs to disturb the gas, causing one small area within it to condense. As this small area increases in density, becoming slightly denser than the gas around it, its gravitational field likewise increases somewhat in strength. More matter now is attracted to the area, and its gravity becomes even stronger; as a result, it starts to contract, in process increasing in density even more. This in turn further increases its gravity, so that it accumulates still more matter and contracts further still. And so the process continues, until finally the small area of gas gives birth to a gravitationally bound object, a newborn star.    1 
 1. It can be inferred from the passage that the author views the information contained within it as

A. controversial but irrefutable
B. speculative and unprofitable
C. uncomplicated and traditional
D. original but obscure
E. sadly lacking in elaboration

2  
 Directions: For the following question, consider each of the choices separately and select all that apply.

2. The author provides information that answers which of the following questions?

A. How does the small area’s increasing density affect its gravitational field?
B. What causes the disturbance that changes the cloud from its original static state?
C. What is the end result of the gradually increasing concentration of the small area of gas?

Rohit1988 · Answer

Question 2 choice C is missing in the answer selection buttons.

Sajjad1994 · Answer

Fixed.

Thank you.

Sajjad1994 · Answer

OE

1. It can be inferred from the passage that the author views the information contained within it as  
 
To the author the concept is both simple and traditional, dating as it does from Newton’s time.

Answer: C

Sajjad1994 · Answer

OE

2. The author provides information that answers which of the following questions?

Question A  is answerable on the basis of the passage. As the area’s density increases, its gravitational field increases in strength.

Likewise,  Question C  is answerable on the basis of the passage. The end result of the process is the formation of a gravitationally bound object, a newborn star. Remember, you must have selected both  A  and  C  to receive credit for this question.

Question B  is not answerable on the basis of the passage. The passage nowhere states what disturbs the gas. 
 
  Answer: A,C

How is a newborn star formed? For the answer to this question, we must

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