Earth's magnetic field is generated by:
A) permanent magnetism in Earth's crustal rocks.
B) electric currents in Earth's core.
C) electric currents in Earth's mantle.
D) the flow of electrons and ions in Earth's magnetosphere.
Correct Answer:
Verified
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Q42: Sedimentary rocks are found:
A)only on the present-day
Q44: Earth's magnetic field originates in:
A)a solid, permanently
Q45: Earth's magnetosphere is a region surrounding the
Q46: Earth's magnetosphere is the:
A)molten core, whose motions
Q47: The magnetopause is the part of the
Q48: The Van Allen belts are:
A)regions of Earth
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