Explicit physics instruction
Conduction transfers energy through microscopic interactions within contacting materials.
Convection transports energy through bulk fluid motion, while radiation transfers energy electromagnetically and does not require matter.
More than one mechanism can act at the same time.
Core relation: q=mcΔT; energy conservation across a defined thermal system.
Worked example
A hot object cooling in air can conduct energy to touching supports, transfer by convection to moving air, and radiate infrared energy simultaneously.
Guided question
Which transfer mechanism can operate through vacuum?
Independent work
- Solve three thermal-energy calculations.
- Classify three heat-transfer mechanisms.
- State one system-boundary assumption.
Misconception check
Two objects at the same temperature need not contain the same internal energy; mass and material matter.
Formative check
Which quantity is energy transfer caused by a temperature difference?
Reveal response
Heat.
Mentor evidence conference
Ask Archaemenes to audit signs, units, transfer mechanisms, and system boundaries.
Teacher guidance
Foundation: Use q=mcΔT.
Core: Combine energy calculations with transfer mechanisms.
Extended: Analyze cooling-curve residuals and nonconstant rates.