The sun undergoes a __________ year solar cycle characterized by fluctuating levels of activity.
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Answer: B. 11
Explanation
Solar activity waxes and wanes in an approximately 11-year cyclic pattern. This periodic variation includes fluctuations in sunspot numbers and solar flare frequency. Magnetic field reversals within the Sun drive this remarkable eleven-year cycle. Sunspots appear as dark regions on the solar surface caused by intense magnetic activity. Solar maximum periods feature high flare activity while solar minimums show reduced spots. Astronomers have tracked this predictable solar cycle for hundreds of observational years.
Satellite operators prepare for increased orbital drag during periods of peak solar activity. Power grids can experience geomagnetically induced currents during intense solar flare events. Researchers study ice core data to understand historical solar cycle variations over millennia. A ten-year duration is slightly too short to match the observed solar cycle average. A twelve-year period exceeds the standard observational timeline of the solar magnetic cycle. A thirteen-year timespan does not align with established solar astronomy research data.
- Subject
- Everyday Science
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- Everyday Science
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- —
- Difficulty
- medium
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