Higher June 2018 Paper 4 Q5
5 The scale diagram below shows two cities, P and Q.
A plane departs from P at 09 47 and arrives at Q at 12 07.
(a) Work out the average speed, in kilometres per hour, of the plane. [5]
(b) Give one reason why your answer may be inaccurate. [1]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 610.7 to 632.2 | 5 | B2 for 1425 to 1475 or B1 for 11.4 to 11.8 or M1 for their length × 125 AND B1 for \(2\frac{1}{3}\), 2[h] 20 or 2.33… or 140 and M1 for distance ÷ time and A1FT ft for a correct answer for their length | See additional guidance This calculation must be seen and distance must be their measurement or their measurement × 125. You must be convinced that it is a time as a divisor. |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| accept any correct reason e.g. it may not have flown in a straight line or it may have been diverted | 1 | If more than one choose the best one. Comment about distance only, see list of exemplars. | |
Appendix: exemplar responses for Q5(b)
| Response | Mark |
|---|---|
| it may not have flown in a straight line | 1 |
| It may not have taken a direct route | 1 |
| it may have been diverted | 1 |
| it flies up [and down] | 1 |
| I might have measured wrong | 1 |
| I am human, humans make errors | 1 |
| Because I rounded to the nearest one/ not exact | 1 |
| Not precise measurements | 1 |
| I might have worked out the distance from P to Q wrong | 1 |
| The distance could have been different | 1BOD |
| We do not know the route the pilot took | 1 BOD |
| The plane wouldn’t be travelling at that speed the whole journey | 0 |
| The pilot make have taken a break | 0 |
| The jet stream may have got them there faster | 0 |
| There may be a delay | 0 |
| Assumes plane travelled at the same speed the whole time/it may have been faster or slower at some points | 0 |
| Scale is not accurate | 0 |