What is heat radiation What does absorb mean

What is heat radiation? What does absorb mean? What is kinetic theory? What does emit mean? What 3 ways can heat radiation be transferred? What surfaces are good absorbers and emitters? What surfaces are poor absorbers and emitters? State Force Particles/ Movement Diagram Solid Why? How does conduction occur in solids? diagram to help ) (Draw a What’s a U Value? How does conduction occur in metals? a diagram to help) a What is specific heat capacity? What is the formula triangle for the calculation? Calculate: A 0. 5 kg object has a specific heat capacity of 1000 J/kg°C. How much energy is needed to increase temp from 20°C to 200°C? Loft insulation Double glazing Hot water tank jacket Condensation? Gas What factors affect the rate of energy transfer? Insulation Method What factors affect: Evaporation? Liquid (Draw How does convection occur in fluids? (Draw diagram to help) What happens if there is a large temperature difference between an object and its surroundings? Cavity wall insulation Draught Proofing How does it reduce heat loss? Label the diagram to show heat transfer is prevented?

QWC: 6 Mark questions • In these questions you will be assessed on using good English, organising information clearly and using specialist terms where appropriate. Q 1: Describe how different animals cope with low temperatures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q 2: Evaluate the design of a radiator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q 3 Compare different types of home insulation and describe what factors may need to be considered when choosing for a home. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

What are the nine types of energy? Give examples: Type of energy What are the two forms of stored energy? What are the energy transfers in the following devices? • Kettle What is the law of conservation of energy? • Bungy cord Example • Car What is another word for spread out or dissipated? • A bow and arrow • A fan heater What happens to energy that is not usefully transferred? Why is energy input of a device never equal to the output? How is energy usually lost in heat transfers? What device is the exception? Sankey Diagrams 1: Label: Total energy in, useful, wasted heat, kinetic, wasted sound. Sankey diagrams 2: Label: How much is each square worth? How much energy is lost? How much is useful? What are the 2 formulas for calculating efficiency? What is the formula triangle for the calculation? Why must you think about both cost effectiveness and efficiency when choosing appliances? How can waste energy be used?

Give the energy transfers following appliances: Applian ce TV Useful How do you calculate amount of energy transferred? How do you monitor electrical energy use in the home? Wasted What is the unit of energy? How much energy has been used? Radio What does a unit of energy mean? Lamp Fan heater Pencil Sharpen er How do you calculate cost of electricity? How does electricity improve our standard of living? • Vacuum Cleaner • Laminat or Drill Mobile Phone Using a battery powered radio: Advantages • Disadvantages Using a clockwork radio: Advantages Disadvantages • •

Start up times? How do start up The National Grid: times affect when a 1. power station is used? 2. 3. 4. Small scale production of electricity: Why are transformers used in the national grid? What is pumped storage? Why are small scale productions not connected to the grid? Method Type of cable Advantages Disadvantages Fossil fuels Nuclear Underground Overhead Biofuels Wind Wave power What effect does generating electricity have on the environment? How can the effect be reduced? Hydroelectric Solar Geothermal Fuels Renewable/ Nonrenewable How is electricity generated? Why is this useful? Advantages Disadvantages

QWC: 6 Mark questions • In these questions you will be assessed on using good English, organising information clearly and using specialist terms where appropriate. Q 1: Evaluate different methods of generating electricity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q 2: Evaluate ways that electricity supply can be matched with demand both increasing and decreasing supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Q 3 Compare the advantages and disadvantages of overhead power lines and underground cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .