(a(i))[4]
Draw a large sketch of the head of the king penguin shown in Fig. 3.1.
(a(ii))[3]
Measure line AB in Fig. 3.1. Use that measurement together with the formula to work out the actual length of the penguin’s beak. $magnification = \frac{\text{length of line AB in Fig. 3.1}}{\text{actual length of the penguin’s beak}}$ Give your answer to one decimal place.
(b)[2]
Apart from size, state two differences between the gentoo penguin and the black-footed penguin in Fig. 3.2.
(c)[6]
Plan an investigation to find out how the thickness of an insulating material affects heat loss in a beaker of hot water.