Up Radiation I Radiation II Kinetic Theory Conduction Conduction II Convection Convection II Evaporation Evaporation II Energy Transfers I Energy Transfers II Insulating Buildings U Values Payback Time Heat Capacity Useful Websites

 

                                                

 

Rogue Physicist.  Free resources for physics education 2006-2016 Dorian Pascoe.  Email: dorian@top-school.co.uk

Most resources are available under a Creative Commons Licence.  Visit our mirror at www.physicsweb.altervista.org

 

 

 

...heat transfer...

 

 

 

 

 

   

This module covers work on the transfer of thermal energy.  The work extends to cover ideas about heat transfer in practical situations including the insulation of buildings and "payback times" for different insulating materials.  Details of the content and teaching order can be seen below.

 

 

Lesson

Learning Outcomes

Notes

1 - Radiation I

  • Know that radiation is absorbed and emitted by all objects.

  • Be able to compare the effectiveness of different surfaces as emitters, by considering the nature of the surface.

Key terms: infrared, emission, absorption.

2 - Radiation II

  • Be able to compare the effectiveness of different surfaces as absorbers, by considering the nature of the surface.

  • Be able to describe and explain how these properties are used to design more effective appliances and buildings.

 

 

3 - Kinetic Theory

  • Be able to describe the differences between the arrangement of the particles in solids, liquids and gases.

  • Use these concepts to explain the behaviour of materials undergoing heating in a variety of contexts.

 

key terms: particles, expand, contract

higher: atoms, molecules

4 - Conduction

 

  • Carry out a practical task to investigate the relative conductivity of a range of materials.

  • Describe the process of conduction in terms of the transport of vibrational energy by free electrons.

 

Key terms: atom, vibrate, conduct, conductor, insulator

higher: vibrational energy, ion, free electron

 

5 - Conduction II

Extended writing opportunity

  • Complete an extended writing task to explain why some materials are more effective conductors than others.

 

Key terms: atom, vibrate, conduct, conductor, insulator

higher: vibrational energy, ion, free electron

 

6 - Convection

  • Carry out a practical task to investigate convection.

  • Describe the process of convection in terms of the movement and changing density of regions of fluid undergoing heating or cooling.

 

Key terms: convection, convection current, rise, sink

higher: density, ascend, descend, energy, particles

 

 

7 - Convection II

  • Observe two demonstrations showing convection in a beaker and a large tank of water

  • Describe weather systems in terms of the movement and changing density of regions of air undergoing heating and cooling.

 

Key terms: convection, convection current, rise, sink

higher: density, ascend, descend, energy, particles

 

 

8 - Evaporation and condensation I

Extended writing opportunity

  • Observe the cooling effects of evaporation.

  • Describe and explain heating and cooling processes involving evaporation and condensation in terms of the energy of the particles involved.

Key terms: evaporation, condensation, particles, energetic, distribution, escape, average thermal energy, rate, heat, cooling, trapped.

9 - Evaporation and condensation II

  • Investigate factors affecting the rate of evaporation.

  • Compare the cooling effect produced as the rate of evaporation is altered.

  • Describe and explain processes involving evaporation and condensation, and compare different scenarios in terms of the rate of evaporation.

Key terms: evaporation, condensation, particles, energetic, distribution, escape, average thermal energy, rate, heat, cooling, trapped.

10 - Energy transfer by heating I

   

11 - Comparing energy transfers

   

12 - Heating and insulating buildings

  • Be aware of the main areas heat energy is lost from a building.

  • Describe a range of methods that can be used to reduce heat loss from a building.

  • Explain how the various methods of reducing heat loss work in terms of conduction, convection and radiation of heat energy.

 

13 - U Values

  • Understand that U-values can be used to compare the effectiveness of different insulating materials.

  • Be able to compare the effectiveness of different insulating materials, given their U-values.

  • Know the definition of a U-value and be able to carry out calculations of the amount of heat lost from various parts of the building, given information about the dimensions, U-values and temperature difference.

 

14 - Solar Panels and Payback time

  • Know that

  • Be able to

  • Be able to

 

15 - Specific Heat Capacity

  • Know that

  • Be able to

  • Be able to

 

16 - Uses of Specific Heat Capacity

  • Know that

  • Be able to

  • Be able to