Worksheet: Hertzsprung-Russell Diagrams

In this worksheet, we will practice interpreting Hertzsprung-Russell diagrams and identifying types of star based on their position on the diagram.

Q1:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of luminosity and effective temperature. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 might an A-type star appear on the diagram?

  • A𝑃
  • B𝑇
  • C𝑄
  • D𝑅
  • E𝑆

Q2:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of luminosity and effective temperature.

At which of the points, 𝑃, 𝑄, 𝑅, 𝑆, or 𝑇, would a G-type red giant appear on the diagram?

  • A𝑃
  • B𝑇
  • C𝑄
  • D𝑆
  • E𝑅

Q3:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of stellar class and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a main sequence star with a surface temperature of 26,000 K appear on the diagram?

  • A𝑇
  • B𝑆
  • C𝑃
  • D𝑅
  • E𝑄

Q4:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of luminosity and effective temperature. At which of the points, 𝑃, 𝑄, 𝑅, 𝑆, or 𝑇, would the Sun appear on the diagram?

  • A𝑇
  • B𝑄
  • C𝑅
  • D𝑃
  • E𝑆

Q5:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of stellar class and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a main sequence star with a surface temperature of 3,300 K appear on the diagram?

  • A𝑅
  • B𝑃
  • C𝑄
  • D𝑇
  • E𝑆

Q6:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of stellar class and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a main sequence star with a surface temperature of 5,000 K appear on the diagram?

  • A𝑄
  • B𝑃
  • C𝑇
  • D𝑅
  • E𝑆

Q7:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of stellar class and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a star with an absolute magnitude of 4.3 and a surface temperature of 6,300 K appear?

  • A𝑇
  • B𝑃
  • C𝑅
  • D𝑆
  • E𝑄

Q8:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of luminosity and effective temperature.

Vega is an A-type star with a luminosity 50 times that of the Sun. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would Vega appear on the diagram?

  • A𝑅
  • B𝑃
  • C𝑆
  • D𝑇
  • E𝑄

Q9:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of stellar class and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a star with an absolute magnitude of 12.5 and a surface temperature of 3,300 K appear?

  • A𝑄
  • B𝑆
  • C𝑅
  • D𝑃
  • E𝑇

Q10:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of luminosity and effective temperature. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 might an O-type star appear on the diagram?

  • A𝑇
  • B𝑅
  • C𝑃
  • D𝑆
  • E𝑄

Q11:

The figure shows a Hertzsprung–Russell diagram plotted in terms of color and absolute magnitude. At which of the points, 𝑃, 𝑄, 𝑅, 𝑆, or 𝑇, would an M-type red giant appear?

  • A𝑃
  • B𝑆
  • C𝑄
  • D𝑇
  • E𝑅

Q12:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of color and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a 𝐡-type star with an absolute magnitude of βˆ’0.8 appear?

  • A𝑃
  • B𝑅
  • C𝑇
  • D𝑆
  • E𝑄

Q13:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of color and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a 𝐾-type main sequence star appear?

  • A𝑆
  • B𝑅
  • C𝑇
  • D𝑃
  • E𝑄

Q14:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of color and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would an 𝑂-type main sequence star appear?

  • A𝑃
  • B𝑅
  • C𝑇
  • D𝑆
  • E𝑄

Q15:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of color and absolute magnitude. At which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would an 𝐴-type main sequence star appear?

  • A𝑃
  • B𝑄
  • C𝑇
  • D𝑅
  • E𝑆

Q16:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of stellar class and absolute magnitude. At roughly which of the points 𝑃, 𝑄, 𝑅, 𝑆, and 𝑇 would a red giant star appear on the diagram?

  • A𝑄
  • B𝑅
  • C𝑃
  • D𝑆
  • E𝑇

Q17:

The figure shows a Hertzsprung–Russell diagram, plotted in terms of stellar class and absolute magnitude. At which of the points P, Q, R, S, and T would a white dwarf star with a surface temperature of 7,100 K appear on the diagram?

  • AS
  • BP
  • CR
  • DQ
  • ET

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