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Also called the sunspot cycle. An 11-year cycle during which the number of sunspots rises to a maximum or falls to a minimum.The periodic change in the number of sunspots; the cycle is taken as the interval between successive minima and is about 11.1 years.
Sunspots are dark because they are much cooler than the surrounding portions of the sun, according to Cool Cosmos, a joint project by the National Aeronautic and Space Administration’s Jet Propulsion Laboratory and California Institute of Technology’s Infrared Processing and Analyses Center.
Why are sunspots dark? Sunspots are a magnetic phenomenon on the Sun. You can think of them as small pores on the surface of the Sun where lines of magnetic force enter and exit. Sunspots always come in pairs like the north and south poles on a bar magnet. The strength of the sunspot magnetic fields are usually 1000 times as strong as the ...
While sunspots have a temperature of about 6300 °F (3482.2 °C), the surface of the sun which surrounds it has a temperature of 10,000 °F (5537.8 °C). From this NASA resource: Sunspots are actually regions of the solar surface where the magnetic field of the Sun becomes concentrated over 1000-fold. Scientists do not yet know how this happens.
Astronomy Exam 3 - Sun and Stars Study online at quizlet.com ... and sun spots 102.what are granules? grain-like features, it's how the photosphere really ... 106.what are some surface phenomena of the sun that we see? sunspots, prominences, flares, and granules 107.what are sunspots dark patches on the surface of the sun (photosphere) 108.what ...
Ok, both of the other answers so far are wrong. While there is still ongoing research into how sunspots form we know it has to do with the sun's magnetic field. They appear dark because the area around them is brighter than they are because sunspots have a lower temperature.
Why are Sunspots dark? ... Sunspots look dark because they're 3,000 degrees Fahrenheit cooler than the surrounding photosphere. They are in fact much hotter than the arc generated by an electric arc-welder and a large sunspot by itself in the sky would outshine the full moon. But because the surrounding photosphere is much hotter and thus ...
Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection.Sunspots usually appear in pairs of opposite magnetic polarity. Their number varies according to the approximately 11-year solar cycle.
What Causes Sunspots? ... The average temperature in the middle of a sunspot is 6,300 degrees Fahrenheit, while the edges of the dark area reach 10,000 degrees Fahrenheit. NASA explains these regions are the size of Earth or larger. ... what causes sunspots quizlet do sunspots affect weather what causes sunspot cycle what causes sunspots to ...