Question

Define Heat........​

Answer 1

ʜᴇᴀᴛ :-

Heat is the form of energy that is transferred between systems or objects with different temperatures. Also referred to as heat energy or thermal energy. Heat is typically measured in Btu, calories or joules

Answer 2

Heat➛

Heat is the form of energy that is transferred between two substances at different temperatures. The direction of energy flow is from the substance of higher temperature to the substance of lower temperature. Heat is measured in units of energy, usually calories or joules. Heat and temperature are often used interchangeably, but this is incorrect.

☆ Heat Transfer

Heat transfer occurs by three mechanisms: conduction, convection, and radiation.

• Conduction is the transfer of heat between atoms and molecules in direct contact
• Convection is the transfer of heat by movement of the heated substance itself, such as by currents in a fluid
• Radiation is the transfer of heat by way of electromagnetic waves.