31643
AssignmentMultiple Select

The Sun

Question 31643 • 26/27 EARTH & SPACE SCIENCE A

Which phenomena help form Earth’s magnetic field? Check all that apply.weather on Earth’s surfacerotation of Earth on its axismetal liquifying in the inner corerevolutions of Earth around the Sunrock solidifying in the outer mantlemotion of metal in Earth’s outer core

Answer
A
weather on Earth’s surface
B
rotation of Earth on its axis
C
metal liquifying in the inner core
D
revolutions of Earth around the Sun
E
rock solidifying in the outer mantle
F
motion of metal in Earth’s outer core

Explanation

Earth’s magnetic field is generated by the geodynamo: moving liquid metal in the outer core creates electric currents. Earth’s rotation helps organize that motion into patterns that sustain the field. Weather, Earth’s orbit around the Sun, and rock solidifying in the outer mantle do not generate the field; the inner core is solid, not liquefying.

AI-written and checked against the verified answer.

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