According to the figure below,the Earth's magnetic reversals are likely due to ______________.

A)meteorite impacts
B)lightning strikes
C)changes in circulation patterns in the outer core
D)changes in circulation patterns in the inner core

Question

According to the figure below,the Earth's magnetic reversals are likely due to ______________.

A)meteorite impacts 
B)lightning strikes 
C)changes in circulation patterns in the outer core 
D)changes in circulation patterns in the inner core

Quizplus · Accepted Answer

The figure shows the Earth's magnetic field and its reversals over time. Scientists believe that these reversals are caused by changes in circulation patterns in the outer core, as the Earth's magnetic field is generated by the motion of molten iron in the outer core. While meteorite impacts and lightning strikes can affect the Earth's magnetic field in the short term, they are not believed to be significant factors in causing magnetic reversals. The inner core, being solid, is not believed to play a significant role in producing the Earth's magnetic field.

According to the Figure Below,the Earth's Magnetic Reversals Are Likely