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.
96 exam-style questions on CIE IGCSE Physics 2.2.1 Thermal expansion of solids, liquids and gases. Each one has a worked solution and a mark scheme showing where the marks go.