7 Matter and materials

7.1 Density  

7.2 Pressure  

7.3 Archimedes’ principle  

7.4 Compressive and tensile forces  

7.5 Stretching materials  

7.6 Elastic potential energy

7 Matter and materials

Exercise 7.1 Density and pressure

Exercise 7.2 Stretching things

Exam-Style Questions