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Question 1
This question is about the Hertzsprung-Russell diagram (HR diagram) and the classification of stars. |
a) | Stars can be classified by their colour. Describe the relationship between the temperature and the colour of a star.
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b) | The diagram below shows the axes for a HR diagram. Complete the diagram by adding the main sequence, red giant and white dwarf regions.
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c) | State what is meant by the term absolute magnitude.
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Question 2
This question is about the classification of stars and the HR diagram. |
a) | Explain why the Moon does not appear on the HR diagram.
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b) | A student has drawn a HR diagram below. Mark the following on the students diagram.
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Question 3
This question is about the life cycle of stars and the HR diagram. |
a) | What type of stars are found in the region labelled A on the HR diagram above? A main sequence B red giant C white dwarf D red supergiant
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b) | What type of stars are found in the region labelled B on the HR diagram above? A main sequence B red giant C white dwarf D sun
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c) | What type of stars are found in the region labelled C on the HR diagram above? A main sequence B red giant C white dwarf D white giant
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d) | Stars with a absolute magnitude of 0 are dimmer than start with an absolute magnitude of +5. True or False? A true B false
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e) | Describe the stars in the region labelled C. A bright and hot B dim and cool C dim and hot D bright and cool
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