| Exam Board | OCR MEI |
|---|---|
| Module | C4 (Core Mathematics 4) |
| Year | 2013 |
| Session | June |
| Marks | 2 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Curve Sketching |
| Type | Optimization and assignment problems |
| Difficulty | Easy -1.2 This is a pattern recognition question requiring students to match curves to declination values based on contextual understanding of how the terminator shifts with solar declination. It requires minimal calculation—just logical ordering of given values and visual interpretation of a provided graph. This is significantly easier than typical A-level problem-solving questions. |
| \(10°\) north: | |
| \(1°\) north: | |
| \(5°\) south: | |
| \(15°\) south: |
| Answer | Marks |
|---|---|
| 3 | 10° |
Question 3:
3 | 10°
north:
1°
north:
5°
south:
15°
south:The graph is a copy of Fig. 6.
The article says that it shows the terminator in the cases where the sun has declination $10°$ north, $1°$ north, $5°$ south and $15°$ south.
Identify which curve (A, B, C or D) relates to which declination. [2]
\includegraphics{figure_6}
\begin{tabular}{|l|l|}
\hline
$10°$ north: & \\
\hline
$1°$ north: & \\
\hline
$5°$ south: & \\
\hline
$15°$ south: & \\
\hline
\end{tabular}
\hfill \mbox{\textit{OCR MEI C4 2013 Q3 [2]}}