A researcher measures the dimensions of a solid rectangular metal block, Block A. The dimensions of the block are 0.150 m0.150\text{ m}0.150 m by 0.200 m0.200\text{ m}0.200 m by 0.500 m0.500\text{ m}0.500 m.
Calculate the volume of Block A.
Block B has exactly the same volume as Block A. The mass of Block B is six times greater than the mass of Block A.
Compare the density of Block B with Block A. Use the equation for density to help your explanation.
A student researches how the density of a gas varies with its absolute temperature at a constant pressure. Look at the graph of her findings.
Describe the relationship between the absolute temperature and the density of the gas shown in the graph.
Give one reason, in terms of particles, why a gas has a significantly lower density than a solid.
A submarine can submerge or rise to the surface by changing the amount of water in its ballast tanks. Explain how controlling the water in these ballast tanks allows the submarine to sink or float on water, referencing density and upthrust.
The particle model Questions
Practise OCR GCSE Physics The particle model with exam-style questions for Foundation and Higher tier. 39 questions, matched to the OCR GCSE Physics (J249) specification and written in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.