SOLAR SYSTEM

UNIVERSE

THE SUN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which best describes the Sun?
A
small, blue star
B
large, red star
C
medium, yellow star
D
large, yellow star
Explanation: 

Detailed explanation-1: -The Short Answer: Our Sun is an average sized star: there are smaller stars and larger stars, even up to 100 times larger. Many other solar systems have multiple suns, while ours just has one. Our Sun is 864, 000 miles in diameter and 10, 000 degrees Fahrenheit on the surface.

Detailed explanation-2: -The hottest stars have temperatures of over 40, 000 K, and the coolest stars have temperatures of about 2000 K. Our Sun’s surface temperature is about 6000 K; its peak wavelength color is a slightly greenish-yellow.

Detailed explanation-3: -This is because the Earth’s atmosphere scatters blue light more efficiently than red light. This slight deficit in blue light means the eye perceives the colour of the Sun as yellow.

Detailed explanation-4: -The sun appears orangish-yellow because the blue light it emits has a shorter wavelength, and is scattered in the atmosphere-the same process that makes the sky appear blue. Astronomers, however, call the sun a “yellow dwarf” star because its colors fall within the yellow-green section of the electromagnetic spectrum.

There is 1 question to complete.