A student investigates the density of blocks made of different materials.
Each block has dimensions of 4 cm×5 cm×10 cm4\text{ cm} \times 5\text{ cm} \times 10\text{ cm}4 cm×5 cm×10 cm.
Calculate the volume of one block.
The table below shows the density of four different materials:
| Material | Density (kg/m3\text{kg/m}^3kg/m3) |
|---|---|
| Material A | 650 |
| Material B | 950 |
| Material C | 1200 |
| Material D | 850 |
Water has a density of 1000 kg/m31000\text{ kg/m}^31000 kg/m3. Identify which of the materials (A, B, C, or D) will sink in water and explain why.
The student wants to make a lightweight float that sits as high as possible in the water. Suggest which material they should use, and explain your choice.
Which two microscopic properties of a substance directly determine its macroscopic density?
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.