Question

The color of a star is primarily determined by its _____. composition size apparent brightness age surface temperature

Answer 1

the color of a star is primarily determined by its : suface temperature. The surface temperature is used to estimate the wavelength that radiated within. the star with lower wavelegth tend to have purple-ish color, while the one with higher wavelength tend to have orange-ish color

Answer 2

The correct answer:

The color of a star is primarily determined by its Surface temperature.

The explanation:

-Stars emit colors of many different wavelengths, but the wavelength of light where a star's emission is concentrated is related to the star's temperature - the hotter the star, the bluer it is; the cooler the star, the redder it is.

The surface temperature is used to estimate the wavelength that radiated within. the star with lower wavelength tends to have purple-ish color, while the one with higher wavelength tends to have orange-ish color.

For example, the really hot stars, called White Dwarf stars, have a white surface temperature, while a cooler star would have a more red color.