The Alignment and Stability of Earth's Magnetic Field Over Geological

question 42

Multiple Choice

The alignment and stability of Earth's magnetic field over geological times can be described by stating that Earth's magnetic axis

• A) is inclined to the planet's spin axis; this alignment varies, and the field has reversed frequently in geological times.
• B) is closely aligned to Earth's spin axis and has remained this way since early in Earth's history.
• C) has had a slowly varying inclination with respect to Earth's spin axis with no abrupt changes, so Earth's magnetic poles have drifted slowly throughout its geological history.
• D) has a fixed alignment of about 11° with respect to Earth's spin axis but has flipped or reversed completely many times in geological times.

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