Physics 0625 · IGCSE · Stars and the Universe

Stars and the Universe — practice question

(a)[3]

Calculate the average orbital speed of Mars in km/s.

(b)[1]

State the shape of the planets' orbits.

(c(i))[2]

Explain the meaning of redshift.

(c(ii))[1]

State the quantity redshift is used to calculate for a galaxy.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “24 km s$^{-1}$” …

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