Form 3 Physics - Boys'' Secondary Mosta Half-Yearly Examinations - Kullegg Maria Regina, 2016 Page 10
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108. This question is about the density.
Stefan needs to find the density of cooking oil. First he measures the mass of an
empty beaker. Then he fills it with oil and measures the mass once again.
a) (i) He measures the mass of the oil by using ____________________________________.
[1]
He obtains the following readings:
Mass of empty beaker
120 g
Mass of beaker filled with oil
200 g
(ii) The mass of oil used = _________ g
[1]
(iii) He then pours the oil in the apparatus shown in Figure 6.
Name this apparatus.
[1]
______________________________________________________
Figure 6
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(iv) The volume of the oil = __________ cm
.
[1]
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(v) Calculate the density of oil in g/cm
.
[2]
______________________________________________________________________________
b) Jodie finds a shiny solid metal block. She wants to know what material it is made of by
measuring its density. The dimensions of the metal block are shown below.
4 cm
2 cm
8 cm
3
(i) Given that the mass of the block is 506 g, calculate the density of the material in g/cm
.
______________________________________________________________________________
______________________________________________________________________________
[3]
______________________________________________________________________________
(ii) Jodie compares the result obtained with the densities found in a Physics textbook.
Aluminium = 2.7 g/cm
Silver = 10.5 g/cm
Iron = 7.9 g/cm
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What material is the block made of? ______________________________
[1]
(iii) Would the block float or sink in the cooking oil mentioned in part (a)? Explain.
______________________________________________________________________________
______________________________________________________________________________
[2]
(iv) The block is cut exactly into four equal parts. Each part has:
•
•
•
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a mass of _____ g.
a volume of _____ cm
.
a density of _____ g/cm
.
[3]
Page 10 of 10
Physics Half yearly exam 2016– Track 3 - Form 3
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