Question

Which of the following is NOT true about aurora on Earth? Select one:a.They are linked to solar activity. b.They are caused by gravity. c.They illustrate Earth’s magnetic field. d.They occur near the northern and southern poles.

Answer 1

The aurora borealis occurs when charged particles from the Sun collide with Earth's atmosphere and are directed toward the poles by our magnetic field. That is why we speak of aurora borealis for the North Pole and austral for the South. According to this we can conclude that the option that is not true is:

b. They are caused by gravity.