Magnetic field reversals/Quiz

Magnetic field reversals is a lecture and an article of the charge ontology project.

You are free to take this quiz based on magnetic field reversals at any time.

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Quiz
{Yes or No, The observed magnetic profile for the seafloor across the East Pacific Rise tends to agree with a profile calculated from the Earth's known magnetic reversals. + Yes - No
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{The first magnetic field reversal noticed by the hominins of Earth is likely to be which of the following? + the Sun - the Small Magellanic Cloud - Scorpius X-1 + the Earth - the Crab Nebula
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{Yes or No, Any field reversal may be linked to biological extinction. + Yes - No
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{True or False, Cooled crustal rock moving outward from the Mid-Atlantic ridge retains a record of the Earth's magnetic field. + TRUE - FALSE
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{Yes or No, The precession peaks found in the δ18O record from core MD900963 are in excellent agreement with climatic oscillations predicted by the astronomical theory of climate. + Yes - No
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{Which of the following is not a phenomenon usually associated with sunspots? - solar photosphere - a hole in the granulated photosphere + production of 7Be - rotation - solar cycle - starspots - flip-flop cycle
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{Yes or No, The calculations do not confirm an inherent magnetic reversal property of the Earth. + Yes - No
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{Chemistry phenomena that may be associated with magnetic field reversals are + ions and radiation may stream down upon the Earth's surface during a field reversal - molecules - atmospheres + the ionosphere may touch the Earth's crust + the surface of the ocean may become ionized + plastic may become brittle
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{Yes or No, The reversals may arise from tectonic events or from impacts from extraterrestrial objects. + Yes - No
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{True or False, The Earth's geomagnetic field reverses its polarity at irregular time intervals. + TRUE - FALSE
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Hypotheses

 * 1) Magnetic field reversals may be induced by excessive influx or outflux of charge.