Question

The surface temperature of a star can be estimated based on the star’s a. size. c. age. b. color. d. mass.

Answer 1

Size, age, colour and mass, all help in determining the surface temperature of a star.

However, the colour might prove to be more helpful than the others.

A brighter star is comparatively newer than a weaker and dimmer star.

A very old star has burned out of gas and hence it shines less brighter and emits less light.

Answer 2

"The surface temperature of the star is estimated based on the star’s colour.

We know that in the "visible spectrum", the violet colour indicates the highest energy and colour with lowest wavelength.

Whereas, the red colour present in the visible spectrum indicates the lowest energy and highest wavelength. We can use the same concept to predict the surface temperature of the star as the red colour indicates the low temperature compare to white star."