Solids expand when heated and contract when cooled.
In which of the following examples is there an unwanted effect of this thermal expansion or contraction, rather than a useful application?
A bimetallic strip bending to complete an electrical circuit in a fire alarm.
A steel tire being heated before being shrunk onto a locomotive wheel.
Concrete road slabs buckling or cracking on a hot summer day.
A red-hot steel rivet contracting as it cools to clamp two metal plates together.
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.