A ________ occurs when an iron-rich fluid in the core is electrically charged and flowing, which generates a magnetic field
A) geotherm
B) geodynamo
C) geophysical anomaly
D) geosyncline
Answer: B
Environmental & Atmospheric Sciences
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a. True b. False
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Changes in the orientation of the Earth's axis over a 26,000-year cycle is known as
A) eccentricity. B) inclination. C) declination. D) obliquity. E) precession.
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The eruptions of Yellowstone's geysers as well as most of the others on Earth can be characterized as ________
A) regular B) irregular C) containing only steam D) becoming much more frequent over time E) mysterious as to how they come to be
Environmental & Atmospheric Sciences