When we know the temperature of something, we know how hot it is, not how much heat/thermal energy it contains. Temperature is measured in degrees Celcius, whilst heat is measured in joules (J).
The amount of heat or thermal energy in something depends on:
- How hot it is (its temperature)
- The material it is made from
- Its mass
Heating makes a material expand, whilst cooling makes a material contract.
Conduction takes place in solids. Metals are the best conductors. Most other solids are poor conductors.
Convection takes place in liquids…