P1c How Insulation Works
- Specification
- Lesson Plans
- Questions
- Resources
- Extras
FOUNDATION
ONLY on Foundation Tier
State that air in a material is a very good insulator.
Recognise that hot air rises and is replaced by falling colder air.
STANDARD
BOTH Foundation and Higher Tiers
Explain in domestic situations, how energy transfer can be reduced in terms of:
- conduction;
- convection;
- radiation.
HIGHER
ONLY on Higher Tier
Describe how energy is transferred by:
- conduction - transfer of KE between particles;
- convection - change of density causes (bulk) fluid flow;
- radiation – infrared radiation needs no medium.
Explain that, unless air is trapped in foam, there will still be energy loss by convection in a cavity wall.
Lesson 1
2010_10_005
Lesson 2
2010_10_006
Content 4
Content 5