Earth's magnetic field originates in:
A) a solid, permanently magnetized core in the interior of Earth.
B) intense electric currents flowing in the Van Allen belts within the magnetosphere of Earth.
C) the tidal ebb and flow of electrically conducting seawater in Earth's oceans.
D) slowly moving currents of molten iron that produce electric currents in the deep interior of Earth.
Correct Answer:
Verified
Q39: On the big island of Hawaii, the
Q40: Suppose that an astronaut trained in geology
Q41: What is the difference between minerals and
Q42: Sedimentary rocks are found:
A)only on the present-day
Q43: Earth's magnetic field is generated by:
A)permanent magnetism
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
Q49: The Van Allen belts are:
A)zones on Earth
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