Chapter 33, Problem 14TE

To determine

The reason for the non-occurrence of nuclear fusion reactions on the outer layers of stars.

Answer to Problem 14TE

Nuclear fusion reaction does not occur on the outer layers of stars due to lack of high temperatures required for fusion reaction to take place.

Explanation of Solution

The major constituent gases of stars are hydrogen and helium. Helium atoms are formed by the fusion of two hydrogen atoms at the star’s core.

Nuclear fusion reactions require a high amount of temperature for the fusion reaction to occur. The temperature at the core is very high, and fusion reactions occur at the core. The temperature at the outer layers of the stars is not high enough to cause nuclear fusion reactions.

Conclusion:

Therefore, nuclear fusion reaction does not occur on the outer layers of stars due to lack of high temperatures required for fusion reaction to take place.