Magnetic field reversal/Quiz

< Magnetic field reversal
The image shows a theoretical model of the formation of magnetic striping. Credit: US Geological Survey.

Magnetic field reversal is a lecture and an article in the charge ontology series.

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Quiz

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1. 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

2. True or False, Cooled crustal rock moving outward from the Mid-Atlantic ridge retains a record of the Earth's magnetic field.

TRUE
FALSE

3. 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

4. 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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External links

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Development status: this resource is experimental in nature.
Educational level: this is a research resource.
Resource type: this resource is a quiz.
Subject classification: this is an astronomy resource.
Subject classification: this is a physics resource .
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