Which of the following is true regarding Earth's magnetic field?
A)it causes magnetic particles in cooling magma to be ejected from the planet.
B)transition periods,during which reversals occur,last an average of about 400 to 800 years.
C)Earth's magnetic field will probably reverse in the next few thousand years.
D)a given field orientation can last billions of years.
E)a recent trend in geologic time is for less frequent reversals.

Question

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The Answer of Which of the following is true regarding Earth's magnetic field?
A)it causes magnetic particles in cooling magma to be ejected from the planet.
B)transition periods,during which reversals occur,last an average of about 400 to 800 years.
C)Earth's magnetic field will probably reverse in the next few thousand years.
D)a given field orientation can last billions of years.
E)a recent trend in geologic time is for less frequent reversals.

Which of the Following Is True Regarding Earth's Magnetic Field