Lesson exploring what happens when materials are heated with real life examples e.g. train lines, bridge gaps and thermostats - includes questions for students.
Developing: Identify some of the everyday applications of thermal expansion.
Securing: Describe qualitatively the thermal expansion of solids, liquids and gases at constant pressure.
Exceeding: Explain in terms of the motion and arrangement of molecules, the extent to which solids, liquids and gases expand when temperature increases.