Why Do Sunspots Appear Dark Quizlet?

Sunspots appear dark because they are "cooler" than the surrounding gas of the photosphere. Sunspots appear dark because they are hotter than the surrounding gas of the photosphere. Flares are caused by magnetic disturbances in the lower atmosphere of the Sun. The Sun spins on its axis roughly once each..

Why do sunspots appear dark?

Sunspots are "dark" because they are cooler than their surroundings. ... Sunspots have a lighter outer section called the penumbra, and a darker central region named the umbra. Sunspots are caused by disturbances in the Sun's magnetic field welling up to the photosphere, the Sun's visible "surface".

Why is it that sunspots appear dark on the Sun quizlet?

Why do sunspots appear dark in pictures of the Sun? They are too cold to emit any visible light. They are extremely hot and emit all their radiation as X-rays rather than visible light. They actually are fairly bright, but appear dark against the even brighter background of the surrounding photosphere.