Classification of stars (A-level only)

Question 11

Table 2 gives physical data for the massive blue supergiant star Aludra and the Sun.

Table 2

Name	Radius / $m\text{m}$	Surface temperature / $K\text{K}$
Aludra	$5.6 \times 10^{9}$	$00030\,000$
Sun	$7.0 \times 10^{8}$	$0006\,000$

1.

Calculate the ratio:

\frac{\text{power output of Aludra}}{\text{power output of the Sun}}

[4]

2.

Discuss why the evolution of a massive supergiant star in our local galactic neighbourhood poses a significant threat to biosphere preservation on Earth.

[3]

Classification of stars (A-level only)

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Question 11

Table 2 gives physical data for the massive blue supergiant star Aludra and the Sun.

Table 2

Name	Radius / $m\text{m}$	Surface temperature / $K\text{K}$
Aludra	$5.6 \times 10^{9}$	$00030\,000$
Sun	$7.0 \times 10^{8}$	$0006\,000$

1.

Calculate the ratio:

\frac{\text{power output of Aludra}}{\text{power output of the Sun}}

[4]

2.

Discuss why the evolution of a massive supergiant star in our local galactic neighbourhood poses a significant threat to biosphere preservation on Earth.

[3]

Classification of stars (A-level only)

Question 11

Classification of stars (A-level only) Questions

Classification of stars (A-level only)

Question 11

Classification of stars (A-level only) Questions