Geomagnetic reversals
A)are rapid events in which the magnetic field "blinks" off and on again.
B)cause in mass species extinctions due to increased cosmic radiation.
C)are predictable events,occurring at set intervals of 100,000 years.
D)are caused by rapid tectonic movement.
E)involve slow diminishments to low intensity and a rapid regaining of full strength.

Question

Quizplus · Accepted Answer

Geomagnetic reversals involve a slow decrease in intensity of the magnetic field, followed by a rapid reversal back to full strength. They are not rapid events or predictable events occurring at set intervals, nor are they caused by tectonic movement or increased cosmic radiation leading to mass extinctions.

Geomagnetic Reversals