Heat & Temperature

What this lesson covers

Heat & Temperature is a 10-part Class 7 Science lesson. Each part makes one point and then hands over to the next, so it can be read in a sitting or picked up again at the part you stopped on. It defines the idea in plain words before using it, works through an example step by step, breaks the topic into its parts and compares them, shows where it is used outside the textbook, names the mistakes that cost marks in an exam, ends with a recap of what to remember.

How it begins

These are used interchangeably in ordinary speech and they are genuinely different. Temperature: how hot something is. The average energy of its particles. Measured in °C. Heat: the total thermal energy transferred. Measured in joules. The example that settles it: a cup of boiling water and a bathtub of warm water.

The 10 parts

1. Heat is not temperature
2. Three ways heat travels
3. Heat always flows one way
4. Why metal feels colder than wood
5. Expansion and its consequences
6. Using insulation deliberately
7. Heat in daily life
8. Where it usually goes wrong
9. What to remember
10. Watch one worked through