CAIE IGCSE Physics 6.1.2.2 Four Inner Planets Are Small Rocky and Questions

Compare rocky inner planets with gaseous outer planets, and use gravity and rotating cloud material to complete an accretion model of Solar System formation.

Exam points

Classify Earth as small and rocky and Jupiter as large and gaseous, giving both size and composition when requested.
Complete an accretion model with gravitational collapse of gas and dust and the formation of an accretion disc from rotating cloud material.

[Maximum number: 1]

Fig. 9.1 shows the Sun as the central dot and the planets Saturn, Jupiter and Earth labelled $\mathrm{S}_{0}$ , $\mathrm{J}_{0}$ and $\mathrm{E}_{0}$ . The planets orbit the Sun anticlockwise. From the Earth's orbit, the planets appear aligned.

Fig. 9.1 (not to scale)

Assume that Saturn takes 30 years to orbit the Sun and that Jupiter takes 12 years to orbit the Sun.

Choose two words from the list to describe each planet.

Table for Question CAIE IGCSE Physics 6.1.2.2 Four Inner Planets Are Small Rocky and Questions question 1 — CAIE IGCSE Physics

Jupiter

Earth

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CAIE IGCSE Physics 6.1.2.2 Four Inner Planets Are Small Rocky and Questions question 1