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It is not actually dark, it is just dark in comparison to the rest of the Sun's photosphere. This is because the magnetic fields/flux associated with the sunspot inhibit convection and therefore reduce the amount of heat rising from below where they are present.
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What is the lighter-colered region around the dark center of a sunspot called?
penumbra
How do you use the word sunspot in a sentence?
You should never look directly at the Sun to try to see a sunspot, as they are not as dark as they look in photographs. The magnetic disturbance that causes a sunspot will seldom occur in the same location twice.
A dark area of gas on the suns surface that is cooler than surrounding gases?
It is called a sunspot.
An area seen as a dark spot on the photosphere of the sun?
The darkest part, where the magnetic field is approximately vertical to the sun's surface is called the Umbra.
What are sunspot maximums and sunspot minimums?
Sunspot maximum and sunspot minimum are the points in time (roughly 6 years apart) when the sun is producing the most, or the least sunspots. In the past this has been measured both by sunspot area and sunspot count and is directly tied to the solar magnetic cycle.
Dark center of a sunspot?
Umbra.
What is the light colored region around the dark center of a sunspot called?
Penumbra
What is the lighter-colered region around the dark center of a sunspot called?
penumbra
What is the center portion of the sunspot called?
umbra
What are dark areas cooler than their surroundings?
sunspot
What is a cool dark area in the surface of the sun?
a sunspot
An area seen as dark spot on the photosphere of sun?
A "sunspot."
What are dark spots on the sun where gas is cooler?
The cooler dark spots on the sun are called sunspots.
What is the center portion of a sunspot called?
Corona
How do you use the word sunspot in a sentence?
You should never look directly at the Sun to try to see a sunspot, as they are not as dark as they look in photographs. The magnetic disturbance that causes a sunspot will seldom occur in the same location twice.
Why does a sun spot appear dark?
Well, a sunspot is not really dark but it is at a lower temperature than the surrounding gases on the surface of the Sun. So it only looks dark by contrast with the area round it.
What is a dark area on the sun that is caused by magnetic storms?
Sunspot. See related question
