Heat is energy transfer between objects at different temperatures.

Heat is energy transfer between objects at different temperatures.

• A. True
• B. False
• C. Only occurs in the presence of pressure
• D. Only when energy is created

Answer: (A)

Heat is the transfer of energy between objects at different temperatures. When objects have different temperatures, energy flows from the hotter to the cooler one until they reach thermal equilibrium. This transfer can happen by conduction (touching), convection (moving fluids), or radiation (emission of energy as waves). Pressure isn’t needed for heat transfer, and heat is not about energy being created inside the objects—it's energy in transit due to a temperature difference. For example, a hot mug of coffee cools as it loses energy to the cooler room, until both reach the same temperature.

Heat is the transfer of energy between objects at different temperatures. When objects have different temperatures, energy flows from the hotter to the cooler one until they reach thermal equilibrium. This transfer can happen by conduction (touching), convection (moving fluids), or radiation (emission of energy as waves). Pressure isn’t needed for heat transfer, and heat is not about energy being created inside the objects—it's energy in transit due to a temperature difference. For example, a hot mug of coffee cools as it loses energy to the cooler room, until both reach the same temperature.