Pearson Edexcel International GCSE (9–1) · PHYSICS · Section
DENSITY AND PRESSURE
16 practice questions
Practice questions
11–16 of 16
Question 11
1 mark · Normal
Answer and check →Which of these units is NOT a correct SI unit for the quantities given?
- A.kg/m³ for density
- B.J/kg °C for specific heat capacity
- C.m/s² for pressure
- D.Pa for pressure
Question 12
3 marks · Normal
Answer and see the solution →Explain, using the idea of density and correct units, why a steel block sinks but a wooden block of the same size floats when placed in water.
Question 13
4 marks · Normal
Answer and see the solution →A rectangular metal bar has a length of 0.20 m, a width of 0.06 m, and a height of 0.04 m. Its mass is 0.86 kg.
(a)[2 marks]Calculate the volume of the metal bar. Give your answer in m³.
(b)[2 marks]Calculate the density of the bar. Give your answer to 2 significant figures and state the unit.
Question 14
2 marks · Normal
Answer and see the solution →A diving suit is made with thicker material for deeper water. Explain using ideas of pressure and area, and state the correct unit for pressure, why this is important for safety.
Question 15
1 mark · Normal
Answer and see the solution →Write the equation for calculating the density of a substance. Define all the symbols you use.
Question 16
2 marks · Normal
Answer and see the solution →Convert a volume of 5000 cm³ to m³. Show your working using the correct unit conversion.