Heat, Temperature and Heat Transfer — O/L Science

What must I remember about Heat, Temperature and Heat Transfer?

• Conduction: heat transfer through solids by particle vibration/free electrons
• Convection: heat transfer in fluids by bulk movement of heated fluid
• Radiation: heat transfer by infrared EM waves; no medium required
• Specific heat capacity (c): energy to raise 1 kg by 1 °C; Q = mcΔT
• Latent heat: energy absorbed/released during state change at constant temperature

Test yourself (1 minute)

1. Convection

   bulk fluid movement; hot rises, cool sinks

2. Radiation

   infrared EM waves; no medium needed; black bodies emit/absorb best

3. Water

   c = 4200 J/kg°C (high — resists temperature change)

Practise Heat, Temperature and Heat Transfer questions today

Must know

• Q = mcΔT (heat = mass × specific heat capacity × temperature change)
• Latent heat: energy for state change at constant temperature

Source: NIE O/L Science — Unit 10: Heat Energy

What should I study first?

What comes next?

Next in the syllabus

Where does Heat, Temperature and Heat Transfer fit in the syllabus?

Grade 11 · Term 2