Pearson Edexcel Level 3 GCE.,Geography Advanced PAPER 3. RATED A+

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Instructions • Use black ink or ball-point pen. • Fill in the boxes at the top of this page with your name, centre number and candidate number. • Answer all questions. • Answer the questi... ons in the spaces provided – there may be more space than you need. • Any calculations must show all stages of working out and a clear answer. Information • The total mark for this paper is 70. • The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. • Calculators may be used. Advice • You are advised to spend the first 15 minutes reading the Resource Booklet. • Read each question carefully before you start to answer it. • Try to answer every question. • Check your answers if you have time at the end. • Good luck with your examination.2 *P66495A0212* Answer ALL questions. Write your answers in the spaces provided. You must use the Resource Booklet provided and your own knowledge and understanding from across your course of study to answer the questions in this paper. 1 Explain why future global warming may be inevitable. .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... .................................................................................................................................................................................................................................................................................... (Total for Question 1 = 4 marks)*P66495A0312* Turn over 3 2 (a) Table 1 below shows the area of the northern hemisphere covered by either snow or ice in January and July for selected years between 1970 and 2020. Year Area in million km2 January Rank Order Area in million km2 July Rank Order d d2 1970 48.26 3 4.94 2= 0.5 0.25 1975 44.95 11 4.60 4 7 49 1980 45.91 9 5.40 1 8 64 1985 50.18 1 4.94 2= –1.5 2.25 1990 45.67 10 2.97 8 2 4 1995 46.13 8 3.97 5 3 9 2000 47.61 4 3.55 6= –2.5 6.25 2005 46.56 6 3.55 6= –0.5 2010 48.84 2 2.51 10 –8 64 2015 47.15 5 2.52 9 –4 16 2020 46.36 7 2.41 11 –4 16 Σd2= Table 1 Complete Table 1 by calculating the value of d2 for the year 2005 and then calculating the value of Σd2 (2) Using the formula below, now calculate Rs. R s      1 6 2  3 d n n Give your answer to two decimal places. You must show your working. (2 [Show More]

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