At several outdoor locations, away from local magnetic objects, a compass settles with its north-seeking end pointing approximately towards geographic north. Which pair of conclusions is consistent with these observations?
Earth has no magnetic field; the region near geographic north behaves like a magnetic south pole.
Earth has no magnetic field; the region near geographic north behaves like a magnetic north pole.
Earth’s core is magnetic; the region near geographic north behaves like a magnetic north pole.
Earth’s core is magnetic; the region near geographic north behaves like a magnetic south pole.
70 exam-style questions on Edexcel GCSE Physics 12.1 Magnets and magnetic fields, covering 12.1.1 Magnetic poles, 12.1.2 Magnetic materials; permanent and induced magnets, 12.1.3 Magnetic fields, and 12.1.4 Plotting compasses and the Earth's magnetic field. Each one has a worked solution and a mark scheme showing where the marks go.