Classification of stars (A-level only)

Table 2 gives data about the supergiant star Zeta Puppis and the Sun.

Table 2

Name	Radius / $m\text{m}$	Surface temperature / $K\text{K}$
Zeta Puppis	$1.4 \times 10^{10}$	$00030\,000$
Sun	$7.0 \times 10^{8}$	$0006\,000$

1.

Calculate the ratio:

\frac{\text{power output of Zeta Puppis}}{\text{power output of the Sun}}

[3]

2.

Discuss why the evolution of a supergiant star in the local part of our galaxy could be dangerous for life on Earth.

[3]

Table 2 gives data about the supergiant star Zeta Puppis and the Sun.

Table 2

Name	Radius / $m\text{m}$	Surface temperature / $K\text{K}$
Zeta Puppis	$1.4 \times 10^{10}$	$00030\,000$
Sun	$7.0 \times 10^{8}$	$0006\,000$

1.

Calculate the ratio:

\frac{\text{power output of Zeta Puppis}}{\text{power output of the Sun}}

[3]

2.

Discuss why the evolution of a supergiant star in the local part of our galaxy could be dangerous for life on Earth.

[3]

Classification of stars (A-level only) Questions