A spacecraft collects a rock from the surface of Mars. The rock contains lead, which is an element heavier than iron.
Explain how the lead was produced and became part of the rock on Mars.
84 exam-style questions on AQA GCSE Physics 8.1 Solar system; stability of orbital motions; satellites, covering 8.1.1 Our solar system, 8.1.2 The life cycle of a star, and 8.1.3 Orbital motion, natural and artificial satellites. Each one has a worked solution and a mark scheme showing where the marks go.