A long, thin brass rod is cooled evenly along its entire length.
What happens to the rod as its temperature decreases?
It becomes longer.
It becomes shorter.
It becomes heavier.
It bends at the ends.
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.