A student determines the density of a small regular wooden block. The mass is measured on a balance with a resolution of 0.1 g and each side is measured with a ruler with a resolution of 1 mm. Which change would most improve the precision of the calculated density?
Repeating the measurement of the mass and taking a mean value
Using a balance with a resolution of 0.01 g to measure the mass
Measuring each side with callipers with a resolution of 0.1 mm
Using a larger wooden block cut from the same piece of wood
40 exam-style questions on AQA GCSE Physics 3.1 Changes of state and the particle model, covering 3.1.1 Density of materials and 3.1.2 Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.