Question

what is the best description of heat? (1 point)
the flow of thermal energy from a cooler substance to a warmer substance
thermal energy
a type of kinetic energy due to the movement of a substances particles
the flow of thermal energy from a warmer substance to a cooler substance

Explanation:

Heat is defined as the transfer of thermal energy. Thermal energy moves from a region of higher temperature (warmer substance) to a region of lower temperature (cooler substance) until thermal equilibrium is reached. Thermal energy itself (without transfer) is not heat. Kinetic energy due to particle movement is related to temperature (average kinetic energy of particles in a substance), not heat. And heat does not flow from cooler to warmer spontaneously (as per the second law of thermodynamics).

Answer:

the flow of thermal energy from a warmer substance to a cooler substance