The Life of a Star

3 marks · Normal

A star forms from a cloud of gas with an initial temperature of K. Due to gravitational compression, its temperature increases by a factor of . Calculate the final temperature of the star once it reaches its main sequence stage.

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1.0 \times 10^6 \text{ K} K (±1000)

Common mistakes: add instead of multiply; incorrect powers of ten

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Marking points

M1 · 1 mark · Identifies multiplication of initial temperature by the given factor is required.

A1 · 1 mark · Correct multiplication:

A2 · 1 mark · Final answer: K

Worked solution