Science Entry Examination Worksheet With Answers - Whitgift School Page 7
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50Whitgift School
Q3.
Josh has a helium-filled balloon.
(a)
He wants to calculate the speed of his balloon as it rises to the ceiling.
(i)
What two measurements should he take to calculate the average speed of his
balloon?
1 ..........................................................................................................
2 ..........................................................................................................
1 mark
(ii)
How can he use these measurements to calculate the speed of his balloon?
.............................................................................................................
.............................................................................................................
1 mark
(b)
Josh attached different masses to his balloon. For each mass, he calculated the speed of rise of
the balloon. His results are shown below.
mass
speed of rise
(g)
(mm/s)
0
120
10
60
20
40
30
–20
40
–70
Whitgift School
| 13+ Science Examination - Sample Paper
7
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