At high-altitude research facilities, personnel are monitored for exposure to ionizing radiation.
Identify one natural source of background radiation whose intensity is significantly increased at high altitudes, and one artificial (man-made) source of background radiation commonly encountered in clinical diagnostics or industrial testing.
81 exam-style questions on Edexcel GCSE Physics 6.1 Atomic structure and isotopes, covering 6.1.1 Structure of the atom, 6.1.2 Isotopes: atomic and mass number, 6.1.3 Sub-atomic particles: masses and charges, and 6.1.4 Electron orbits and energy changes. Each one has a worked solution and a mark scheme showing where the marks go.