Conduction, Convection, Radiation

Conduction is the transfer of heat from one object to another through direct contact.

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Radiation is the transfer of heat in the form of electromagnetic waves, which can occur in a vacuum.

An egg cooking in a frying pan is a common example of conduction.

Warm air rises because it is less dense than cooler air, demonstrating convection.

Heat always flows from a hotter substance to a colder substance.

Convection is the primary mechanism of heat transfer in liquids and gases.

The warmth felt from the sun is an example of radiation.

Ocean currents are an example of convection, where warm water rises and cooler water sinks.

Thermal conductivity is a measure of how well a material conducts heat; materials with high thermal conductivity transfer heat more efficiently.