9 Do not write outside the box 09 GK83986Jun12PH1HP Turn over Discuss the

9 do not write outside the box 09 gk83986jun12ph1hp

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9Do not write outside the box (09) G/K83986/Jun12/PH1HP Turn over Discuss the advantages and disadvantages of the plan to build thousands of offshore wind turbines around Britain and the suggested electricity power link between Britain and Iceland. ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ (6 marks) ____ 9 Turn over for the next question
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10 G/K83986/Jun12/PH1HP Do not write outside the box (10) There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED
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11 Do not write outside the box G/K83986/Jun12/PH1HP Turn over (11) 4 Warm air inside a house contains water in the form of a gas. The water condenses onto cold surfaces such as windows. This leaves liquid water on the inside of the glass. 4 (a) Explain what happens to the particles when water changes from a gas to a liquid. ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ (2 marks) 4 (b) Many houses in the UK have double-glazed windows. Section through double-glazed window U-value = 2.8 W/m 2 °C Section through single-glazed window U-value = 5.0 W/m 2 °C If the window is double-glazed rather than single-glazed there is less condensation on the inside of the glass. Explain why. ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ (2 marks) Question 4 continues on the next page
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12 Do not write outside the box G/K83986/Jun12/PH1HP 4 (c) Double glazing can be made using two pieces of normal glass with an air gap between them. Better insulating glass (Superglaze or G-type) can be used instead of normal glass. The size of the air gap can also be increased to improve insulation. A company making double glazing provides some information about their products. U-values for different types of double glazing Normal glass Superglaze G-type 6 mm air gap 3.1 2.7 2.6 12 mm air gap 2.8 2.2 2.0 16 mm air gap 2.7 2.0 1.8 For the same size window, under the same temperature conditions, the energy loss halves if the U-value is halved. Cost of double glazing in £ per m 2 Normal glass Superglaze G-type 6 mm air gap 90 110 160 12 mm air gap 100 130 185 16 mm air gap 110 155 210 (12)
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13 Do not write outside the box G/K83986/Jun12/PH1HP Turn over (13) 4 (c) (i) The data the double glazing company produced is checked and confirmed independently by other scientists. Suggest why it is important to confirm the data independently. ............................................................................................................................................ ............................................................................................................................................ (1 mark) 4 (c) (ii) A homeowner is going to replace his old single-glazed windows with new double-glazed windows. Discuss the cost of fitting double glazing using better insulating glass compared with double glazing using normal glass. Use the information given in the tables. ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ (3 marks) ____ 8 Turn over for the next question
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14 Do not write outside the box G/K83986/Jun12/PH1HP (14) 5 Radio waves and microwaves are two types of electromagnetic wave. Both waves: can be used for communications travel at the same speed through air. 5 (a) Give two more properties that are the same for both radio waves and microwaves. 1 ......................................................................................................................................... ............................................................................................................................................ 2 ......................................................................................................................................... ............................................................................................................................................ (2 marks) 5 (b) Some satellites are used to transmit television programmes. Signals are sent to, and transmitted from, the satellites using microwaves.
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  • Spring '16
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  • Biology, RNA, Energy, Glass, Pastpaperquestions AQA Science, ........., Insulated glazing

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