Which of the following processes is involved in the sunspot cycle?
A) A slight gravitational contraction of the Sun
B) Small variations in the rate of nuclear energy generation in the solar interior
C) An imbalance in the operation of the solar thermostat
D) The winding of magnetic field lines due to the Sun's rotation
E) A large change in the amount of visible light emitted by the Sun

Question

Quizplus · Accepted Answer

The sunspot cycle is caused by the winding of magnetic field lines due to the Sun's rotation. This causes magnetic activity on the Sun's surface, which can be observed as sunspots. As the Sun rotates, the magnetic field lines become twisted and tangled, which can lead to increases in solar activity and the appearance of more sunspots.

Which of the Following Processes Is Involved in the Sunspot