Heat is another form of energy. Previously we worked with potential energy PE, the energy an object of mass mass m possesses for being a height h above a surface in gravitational field g. PE = mgh. We also worked with kinetic energy, the energy of motion. Kinetic energy KE = 05mv².
There are three way heat energy is transfered (moved).
Radiation: heat carried as wave of light. Use a flat cardboard square covered with aluminum foil to reflect solar radiation. One can feel the heat of the sun reflected by the foil.
Convection: heat carried upwards by rising fluids. Warm air rises. Warm water rises to the surface of the lagoon. Water vapor generated by a pot of boiling water rises. Convection is important in the fields of weather and oceanography. Convection in the atmosphere generates clouds. In the tropics, convection is almost the exclusive generator of low level clouds.
Conduction: the transfer of heat through a solid substance or between two substances.
Temperature is not the same thing as heat. Temperature is a measure of the kinetic energy within the molecules of a substance or fluid. Temperature is related to heat. Heat energy moves from places at a higher temperature to places at a lower temperature.
Fire and ice: measuring temperatures
Water is boiled, water is melted. The temperatures of these events is measured in a demonstration of temperature and explanation of the Celsius system. Other temperatures demonstrated include that of the human body, room temperature, melting solidified coconut oil.