Moderate -0.5 This is a straightforward verification question requiring substitution of given values (latitude 60°) into a provided equation to check a stated result. It involves routine calculation with no conceptual difficulty or problem-solving insight needed—just careful arithmetic following a formula already given in the article.
In lines 94 and 95 the article says
"Fig. 8 shows you that at latitude \(60°\) north the terminator passes approximately through time \(+9\) hours and \(-9\) hours so that there are about 18 hours of daylight."
Use Equation (4) to check the accuracy of the figure of 18 hours. [4]
In lines 94 and 95 the article says
"Fig. 8 shows you that at latitude $60°$ north the terminator passes approximately through time $+9$ hours and $-9$ hours so that there are about 18 hours of daylight."
Use Equation (4) to check the accuracy of the figure of 18 hours. [4]
\hfill \mbox{\textit{OCR MEI C4 2013 Q4 [4]}}