Term
| Name 3 uses of energy in the home |
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Definition
| heating, lighting operating appliances |
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Term
| Name three sources of energy in the home |
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Definition
| electricty, gas and solid fuels |
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Term
| Which use of energy is more expensive? |
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Definition
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Term
| What does the power rating of an appliance tell you? |
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Definition
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Term
| What unit is used to for the power rating of an appliance? |
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Definition
| watt (W) or kilowatt (kW) |
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Term
| What unit is used for energy consumption per hour? |
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Definition
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Term
| What unit do electricity suppliers use to charge their customers? |
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Definition
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Term
| How can you work out how many units of electricity you have used? |
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Definition
| the difference between two meter readings |
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Term
| What tax is added to your electricty bill? |
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Definition
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Term
| How could you reduce the cost of lighting in your home? |
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Definition
| change to energy saving light bulbs |
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Term
| Name three places where heat can be lost from a house. |
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Definition
| any three from - roof, walls, windows, floors, doors. |
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Term
| How can heat loss from windows be reduced? |
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Definition
| Double glazing, thick curtains / blinds |
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Term
| How can heat loss from doors be reduced? |
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Definition
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Term
| How can heat loss from walls be reduced? |
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Definition
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Term
| How can heat loss from the roof be reduced? |
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Definition
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Term
| How can heat loss from floors be reduced? |
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Definition
| thick carpets, insulation under the floor boards |
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Term
| For heat loss prevention methods what does the term 'pay back time' mean? |
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Definition
| the time taken for the saving to pay back the cost |
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Term
| How can you make sure an experiment is FAIR? |
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Definition
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Term
| How can you make the results of an experiment RELIABLE ? |
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Definition
| repeat the experiment and calculate an average |
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Term
| Name the 3 methods of heat transfer (heat loss) |
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Definition
| conduction, convection, radiation |
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Term
| Which method of heat loss involves heat moving through a SOLID? |
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Definition
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Term
| Which method of heat loss involves heat moving through a LIQUID or GAS? |
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Definition
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Term
| Which method of heat loss involves heat moving through a VACUUM (no particles)? |
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Definition
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Term
| Which methods of heat loss involves heat moving in all directions? |
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Definition
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Term
| Which methods of heat loss involves heat moving UPWARDS? |
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Definition
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Term
| What is the name for the movement of gas (air) or liquid upwards as a result of the particles being heated? |
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Definition
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Term
| What is the name of the invisible light that hot objects give off? |
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Definition
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Term
| Give one use of an infra red image. |
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Definition
e.g. detecting heat loss from a house, finding someone in a smoke filled room,
finding an animal/person outside at night |
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