Module 2:

Section 3.2.2 - Materials

Bulk properties of solids	Density
Stretching solids	Tensile strain and tensile stress. Elastic strain energy Breaking stress.	Derivation of stored energy Description of plastic behaviour, fracture and brittleness; interpretation of simple stress-strain curves.
	Hooke's law	elastic limit, investigations.
The Young Modulus		One simple method of measurement. Use of stress-strain graphs to find the Young modulus.