4400 Higher November 2007 Paper 3 Q10
10 The table shows the carbon dioxide emissions, in tonnes, produced by each of four regions in 2001.
| Country | Carbon dioxide emissions |
|---|---|
| USA | \(5.7 \times 10^9\) |
| Africa | \(8.4 \times 10^8\) |
| Russia | \(1.4 \times 10^9\) |
| China | \(3.2 \times 10^9\) |
(a) Which of these regions produced the lowest carbon dioxide emissions? (1)
(b) Work out the total carbon dioxide emissions produced by these four regions.
Give your answer in standard form correct to 3 significant figures. (2)
Give your answer in standard form correct to 3 significant figures. (2)
(c) \(1.4 \times 10^9 = k \times 8.4 \times 10^8\)
Calculate the value of \(k\). (2)
Calculate the value of \(k\). (2)
| Scheme | Marks |
|---|---|
| Africa | B1 |
| (1) |
Notes
B1: or \(8.4 \times 10^8\)
| Scheme | Marks |
|---|---|
| \(1.11 \times 10^{10}\) or \(1.114 \times 10^{10}\) | M1 A1 |
| (2) |
Notes
M1 A1: M1 for figs 111 or 1114
| Scheme | Marks |
|---|---|
| 1.66... or 1.7 or 1.67 or 1.66 or \(\frac{5}{3}\) or \(1\frac{2}{3}\) | B2 |
| (2) | |
| (5 marks) |
Notes
B2: B1 for figs 166... or 17 or 167 or 166