MTEL Physics Practice Exam

Category - Physics

Which of the following describes the process by which energy is transmitted from one region of space to another through molecular collisions?
  1. Radiation
  2. Latent heat
  3. Convection
  4. Conduction
Explanation
Correct Response: D. Conduction is the thermal-energy-transfer process that involves the transfer of kinetic energy between molecules as they collide. Radiation (A) is the thermal-energy-transfer process that involves the transfer of energy through electromagnetic waves. Latent heat (B) is not an energy- transfer process. It is the energy per unit mass absorbed or released by a substance during a change in phase. Convection (C) is the thermal-energy-transfer process that involves the transfer of energy through currents in fluids caused by variations in density due to uneven heating or cooling.
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