Grade 12 Conduction Worksheet
This worksheet covers key concepts of conduction, including mechanisms, factors affecting heat transfer, and applications, suitable for Grade 12 Physics students.
Includes
Standards
Topics
Conduction: Heat Transfer
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. Which of the following best describes the primary mechanism of heat transfer in conduction?
Movement of heated fluids
Electromagnetic radiation
Vibrations and collisions of particles
Transfer of charge carriers
2. Which of the following materials is generally considered the best thermal conductor?
Wood
Air
Copper
Plastic
3. The rate of heat transfer by conduction is directly proportional to the area and the temperature .
4. Thermal conductivity is a measure of a material's ability to heat.
5. Explain the role of free electrons in the high thermal conductivity of metals. Use the diagram below as a reference.
6. Conduction occurs most efficiently in gases due to the large spacing between molecules.
True
False
7. Fourier's Law of Heat Conduction states that the heat flux is proportional to the negative temperature gradient.
True
False
8. A window pane has a thickness of 0.005 m and an area of 1.5 m². If the thermal conductivity of glass is 0.8 W/(m·K) and the temperature difference across the pane is 15 K, calculate the rate of heat transfer through the window pane. Show all steps and state the formula used.