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• Shadow graph. • • • • • •

~:t.IajS1'~ Shadow stick lengths OJ Write how many times Laura and Zoe measured the shadow.
PAGE 116 [?J Write the length of the shadow at these times:

[ill Write the time when the shadow was this length.
a 38 cm b 40 cm c 58 cm d at its longest e at its shortest
OJ
m Write two times when the shadow was 35 cm long.
m Write two more times when the shadows were the some length.
14 times
[§] How much shorter did the shadow become between these times?
00

m How much longer did the shadow become between these times? a 55cm b 48cm
c 32cm d 68cm
[E] If it is sunny from 7:00 until 19:00, estimate the length of the shadow at:
a ~
Time: 9:00 9:30 10:00 10:30 11 :00 11 :30 12:00 12:30 13:00 13:30 14:00 14:30 15:00 15:30 a 11 :00 or 13:00
Lauro and Zoe measured the length of a stick's shadow throughout the day.
b 1 0:45 or 13:30
Work out the approximate length of the shadow
at 09:15 and every half-hour until 15:15. c OQ:20 or 15:00
v_ ~
e 12:00
d 15:30

illi 11 :30 and 12:30

~ [ID [1J

Shadow-stick graph. [ 11 :00, 13:00] a 10cm a 10cm Open: estimates will
If non-plotted points b 3cm b 3cm probably lie within
are measured, some c 33cm c 36cm these ranges:
possibilities are: a 70cm - QOcm
[1 0:30, 13:40] b 75cm - 85cm
[10: 15, 14:00] c QOcm - 110cm
[10:00, 14:20] d no shadow
Challenge
[q:50, 14:30] NB: all estimates are
[Q:30, 14:50] 60,52,45,40,36,33,33, subjective.
36, 3Q, 43, 47, 54, 63
[Q:OO, 15:20]
centimetres.