← 1.4 Temperature and Thermal Expansion
Linear expansion and railway gaps
Physics · Grade 10 · about 40 minutes
Measure and calculate the extra length of a solid, then size the gap a Kenyan rail needs on a hot afternoon.
Sign in to read this lesson
Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 10 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Temperature and how we measure it
- Thermal expansion and where it matters
- How a liquid-in-glass thermometer works
- The Celsius and kelvin scales
- Thermocouples, probes and infrared
- Linear expansion and railway gaps
- Area expansion of solids
- Volume expansion and water tanks
- Bimetallic strips and thermostats
- Thermal expansion around Kenya