[SCIENCE] Q3 Exam - Heat

• Conduction

  1. Heat occurs through a medium

  2. Molecules gain energy and move faster

  3. Ironing clothes, spoon with hot soup
• Particle theory of matter

  Matter consists of small particles that are in constant motion
• Heat transfer

  • Conduction
  • Convection
  • Radiation
• Thermal energy


  The speed in which atoms and molecules move depends largely on the energy they contain
• Heat

  Thermal energy flowing due to temperature differences, is considered
• Radiation

  Transfer of electromagnetic wave: radiation can take place in vacuum
• Temperature

  Average amount of kinetic energy, hot = faster, cold = slower
• Heat is the transfer of energy from one object to another due to temperature difference.
• Radiation is the transfer of heat without any medium or material involved, such as sunlight on Earth.
• Conduction is the transfer of heat through direct contact between objects.