What is a solar cycle?

Answer

The solar cycle is an 11-year cycle of solar activities during which there is a rise and fall in the numbers and surface area of sunspots. The solar cycle is also known as the solar magnetic activity cycle.
Q&A Related to "What is a solar cycle?"
( ′sō·lər ′sī·kəl ) (astronomy) The periodic change in the number of sunspots; the cycle is taken as the interval between successive
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About 50% of the incoming solar radiation reaches the surface of the planet. The rest is reflected or absorbed by the atmosphere & clouds, and a small portion is reflected by
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Providing hot water for washing, showering and other uses in a home is usually produced by an electric, oil or gas water heater. Water is heated in a tank by flame, or in the case
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The current 11 to 13 year cycle of solar activity is cycle 24,which officially started on January 4, 2008.The source below explains. Don't believe every thing you hear scientifically
http://answers.yahoo.com/question/index?qid=201010...
2 Additional Answers
The solar cycle is when the Sun's magnetic field rotates a full 360 degrees, causing its poles to switch. A solar cycle only happens once every 22 years.
The solar cycle is what drives solar weather, and sometimes weather here on Earth (provided that's where you are right now!) It also can effect climate change. This is all done by the level of irradiation being changed.
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