Question 8
The figures below are unnamed planets K, D, and H and their internal
composition. These are not drawn to scale.

a. Compare the three planets. Identify one (1) similarity that all three share, and
explain one (1) major difference (2 marks)
b. The planets can be classified into two main groups. Propose a classification
scheme based on the figure and justify your reasoning by referring to both
composition and observable physical properties. (2 marks)
c. Planet H has a rock core surrounded by liquid metallic hydrogen and liquid
hydrogen. Suggest how this internal structure might influence Planet H’s
strong magnetic field compared to Planet K and Planet D. (2 marks)
composition. These are not drawn to scale.

a. Compare the three planets. Identify one (1) similarity that all three share, and
explain one (1) major difference (2 marks)
b. The planets can be classified into two main groups. Propose a classification
scheme based on the figure and justify your reasoning by referring to both
composition and observable physical properties. (2 marks)
c. Planet H has a rock core surrounded by liquid metallic hydrogen and liquid
hydrogen. Suggest how this internal structure might influence Planet H’s
strong magnetic field compared to Planet K and Planet D. (2 marks)