The three ways of heat transfer are conduction,  badconductionconvectionliquidspoorradiationvacuum and radiation.

In  badconductionconvectionliquidspoorradiationvacuum heat transfer takes place between two ends of the same solid or through two solid substances that are at different temperatures but in contact with one another.

The substances which does not conduct heat easily are called  badconductionconvectionliquidspoorradiationvacuum conductors or insulators.

Convection takes place in  badconductionconvectionliquidspoorradiationvacuum and gases.

The temperature inside igloo is warm because snow is a  badconductionconvectionliquidspoorradiationvacuum conductor of heat.

By radiation heat can be transferred through empty space even through  badconductionconvectionliquidspoorradiationvacuum.

Formation of land breeze and sea breeze is due to  badconductionconvectionliquidspoorradiationvacuum of air.

In hot air balloons heat is transferred by  badconductionconvectionliquidspoorradiationvacuum.

Heat energy from the Sun reaches the Earth by  badconductionconvectionliquidspoorradiationvacuum.