Physics Half-Yearly Examination Worksheets - Kullegg Maria Regina, Boys' Secondary Mosta Page 7

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S
B
ECTION
This section carries 45 marks.
6. This question is about density.
a) Martina investigates whether steel spheres of different size have a different density or not.
She is given seven solid steel spheres of different size as shown below.
steel spheres
She measures the mass and volume of each sphere and sets up the table below.
3
Volume (cm
)
10
20
30
40
50
60
70
Mass (g)
80
160
240
350
400
480
560
3
(i) Plot a graph of mass (g) on the y-axis against volume (cm
) on the x-axis.
[4]
(ii) One of the readings is incorrect.
 Circle the incorrect reading on your graph.
[1]
 The correct reading should be _________ g.
[1]
3
(iii) Using the graph or otherwise, find the mass of a sphere having a volume of 22 cm
.
[1]
______________________________________________________________________________
(iv) Using the values in the table, calculate the density of the sphere which has a volume of:
 10 cm
3
___________________________________________________________________ [1]
 70 cm
3
___________________________________________________________________ [1]
(v) Using the answers in a (iv), what can Martina conclude?
______________________________________________________________________________
[2]
______________________________________________________________________________
b) (i) The mass of a can filled with ice tea is 330 g. When empty the mass of the
3
can is 20 g. Given that the density of ice tea is 1.05 g/cm
, calculate the
volume of ice tea inside the can.
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________ [3]
3
(ii) If the volume of the metal used to make the can is 7.4 cm
, calculate its density.
______________________________________________________________________________
______________________________________________________________________________
[1]
Page 7 of 10
Physics Half yearly exam 2015 – Track 3 - Form 3

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