Suppose that,for some unknown reason,the core of the Sun suddenly became hotter.Which of the following best describes what would happen?
A)Higher temperature would cause the rate of nuclear fusion to rise,which would increase the internal pressure,causing the core to expand and turn the Sun into a giant star.
B)Higher temperature would cause the rate of nuclear fusion to rise,which would increase the internal pressure,causing the core to expand and cool until the fusion rate returned to normal.
C)Higher temperature would cause the rate of fusion to fall,decreasing the internal pressure and causing the core to collapse until the rate of fusion returned to normal.
D)The higher temperature would not affect the fusion rate but would cause the core to expand and cool until the temperature returned to normal,with the core at a new,slightly larger size.

Question

Quizplus · Accepted Answer

A higher temperature would increase the rate of nuclear fusion in the core of the Sun, which would cause the internal pressure to rise. This increase in pressure would cause the core to expand, which would in turn cool it down until the fusion rate returned to normal. This phenomenon is known as negative feedback, as the increase in temperature causes a response that ultimately brings the temperature back down to its original level. None of the other choices accurately describe the likely outcome of a sudden increase in the temperature of the Sun's core.

Suppose That,for Some Unknown Reason,the Core of the Sun Suddenly