Question

The age of a star can be estimated by its color, which of these colors indicates the star is amongst the youngest?
Yellow
Red
White
Blue

Answer 1

Explanation:

the correct answer is blue.

because the colour of stars inducate a star's temperature and its age. if a star is blue, it means that the star is youngest.

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Answer 2

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Blue

The age of a star can be estimated by its color, blue color indicates the star is amongst the youngest.

$\mathfrak{\large{\underline{\underline{Additional\:\:Information :- }}}}$

• Stars are one of the celestial bodies in the space.

• A Star is made up of spheroid of plasma held together by its own gravity.

• The star stands against its gravity with the help of the Nuclear fusion reactions in its core.

• With the collapsing of cloud material a star is formed.

• Hydrogen is mostly found in the stars.

• Earth has sun as it's nearest star.

• A constellation is a group of stars which form an imaginary pattern in the sky, representing any mythological person or creature etc.

Example - Orion, Leo, Draco or Cancer.

• The color of a star mostly indicates the star's age or can also suggest a star's temperature,

• The Blue coloured stars are the hottest stars and come under Class - O stars.

• The Red coloured stars are the coldest ones who come under Class - M stars.

• The stars burn hydrogen in their core, this emits a lot of energy and makes star appear blue.

• As stars get old, the amount of hydrogen decreases to burn, thus there is a decrease in the amount of energy they emit.

• Thus, younger stars appear blue while older ones appear more red.