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Sunspots are created because of an increase of magnetic activity concentrating on a certain part of the photosphere. If the magnetic activity goes away in that section of the sun, then the sunspot will go away as well.

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14y ago

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Visible dark spots on the sun are called?

We call them sunspots, but dark and cool are relative terms. A sunspot is dark only relative to the surrounding solar surface, but still intensely bright compared to your common household light bulb. It's cooler than the surrounding solar material, but still hot enough to vaporize a spaceship and anyone inside it in a fraction of a second.


What are the dark and cooler spots on sun called as?

Dark spots on the Sun are called sunspots. (You knew that was coming, didn't you?)


Why do sun spots appear dark?

A typical spot consists of a dark region called the umbra, surrounded by a lighter region known as the penumbra. The sunspots appear relatively dark because the surrounding surface of the Sun (the photosphere) is about 10,000 degrees F., while the umbra is about 6,300 degrees F. Sunspots are quite large as an average size is about the same size as the Earth.


What are dark spots that appear on the surface of the sun called?

Dark spots that appear on the surface of the sun are called sunspots. They are areas of reduced temperature caused by interactions with the sun's magnetic field.


What the black spots show up in the sun?

They are sun spots. Sun spots are cooler than the rest of the sun. They have strong magnetic field and usually occur in groups or in pairs. When they are in pairs one sun spot usually means the north pole of a magnet while the other means the south. Sun spots can sometimes be bigger than earth. The eleven year cycle of sunspots is the number of sunspots increasing and decreasing again. Hope that answered all your questions about sun spots.