GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Sunspots are darker and ____ than the rest of the surface.
A
hotter
B
cooler
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. The temperature of a sunspot is still very hot though-around 6, 500 degrees Fahrenheit!

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). Sunspots are only dark in contrast to the bright face of the Sun.

Detailed explanation-3: -Sunspots appear dark to us because they’re cooler than the surrounding areas on the sun’s visible surface, or photosphere, which has a temperature of about 10, 000 degrees Fahrenheit (5, 537.8 degrees Celsius).

Detailed explanation-4: -Solar measurements reveal that the average surface temperature of the sun is 6000° Celsius and that sunspots are about 1500° Celsius cooler than the area surrounding them (still very hot), and can last anywhere from a few hours to a few months.

There is 1 question to complete.