The method of transmission of heat includes conduction, convection, and radiation. Conduction occurs in solids, convection in fluids, and radiation through electromagnetic waves. Therefore, all three methods together describe how heat can be transmitted.
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In conduction, particles of matter do not move on their own from one place to another. Instead, heat is transferred through direct contact between particles. The particles vibrate and transfer energy without significant movement.
Heat is primarily transferred in liquids and gases by convection. Convection involves the movement of fluid particles, carrying heat as they circulate. While conduction can occur to some extent, it is less efficient, and radiation plays a minor role.
The unit of heat is Degree Celsius. Degree Celsius is a unit of temperature, not heat. The other options (Calorie, Kilocalorie, Joule) are units used to measure heat or energy, while Degree Celsius measures temperature.
The SI unit of temperature is the kelvin (K). It is defined based on the triple point of water, where water exists in equilibrium as a solid, liquid, and vapor. The kelvin scale is an absolute temperature scale, with 0 ...