SOLAR SYSTEM

Detailed explanation-1: -Sunspots are dark splotches on the Sun. Which statement is TRUE? They are extremely cold objects, as cold as Pluto.

Detailed explanation-2: -Sunspots appear dark because they are cooler than their surroundings. Large sunspots are thousands of degrees cooler than the areas that surround them (about 4, 200 °C for a sunspot compared to 6, 000 °C for the photosphere surrounding it).

Detailed explanation-3: -Sun spots are the darker, cooler areas that are present on the surface of the Sun in a region called the photosphere. They are the regions where the magnetic field is about a thousand times greater than that of the Earth. The photosphere has a temperature of about Kelvins.

Detailed explanation-4: -Sunspot positions also change throughout the solar cycle. During the solar maximum, many sunspots are found along mid-latitudes (approximately 30 degrees north and 30 degrees south). Then, sunspots gradually move toward the equator, where few are found during the solar minimum.

Detailed explanation-5: -Because sunspots are cooler than the rest of the sun’s surface, they look darker. At the same time, the hot gases blocked by these sunspots flow into the areas around them, making those areas even hotter and brighter than normal. This contrast makes sunspots stand out even more.

Detailed explanation-6: -"Instead of being about 5700 degrees kelvin like the rest of the photosphere, the temperature of a sunspot is more like 4000 degrees kelvin. But that is still very hot, compared to anything here on the earth.” So while sunspots are about one-third cooler than the surrounding materials, they are much darker.