Higher June 2019 Paper 2 Q9
9. In scientific reports, temperatures are often given using more than one temperature scale.
Celsius, Fahrenheit and kelvin are all measured on linear scales.
Use the information given below to complete the tables.
(a) [1]
| Degrees Celsius | Degrees Fahrenheit |
|---|---|
| 30 | …………… |
| 40 | 104 |
| 50 | 122 |
| 60 | …………… |
(b) [2]
| Kelvin | Degrees Celsius |
|---|---|
| 0 | …………… |
| 100 | …………… |
| 200 | …………… |
| 300 | 26·85 |
| 400 | 126·85 |
(c) [5]
| Kelvin | Degrees Celsius | Degrees Fahrenheit |
|---|---|---|
| 320 | …………… | …………… |
| Scheme | Marks | Comments |
|---|---|---|
| 86 AND 140 | B1 |
| Scheme | Marks | Comments | ||||||
|---|---|---|---|---|---|---|---|---|
| B2 | B1 for 1 correct entry or for all 3 negative entries with correct differences |
| Scheme | Marks | Comments |
|---|---|---|
| 320 kelvin to Celsius: working with 100 difference in both kelvin and Celsius | M1 | e.g. sight of \(20 + 26.85\), \(126.85 - 80\), \(320 - 273.15\) |
| 46.85 (degrees Celsius) | A1 | Look for response in the table Accept 46.8, 46.9, 47 Look for evidence in the table |
| Answer for Fahrenheit between 104 and 122 exclusive | B1 | CAO, independent of all other marks Look for evidence in the table |
Suitable calculation, e.g.
| m1 | FT from rounding or truncation of 46.85 (Celsius) e.g. 7 tenths of 18 FT ‘their derived 46.85 °C’ provided M1 previously awarded |
| 116(.33 Fahrenheit) | A1 | Accept 116 (Fahrenheit)) from correct working |
| (8) |