Track 2 Form 3 Physics Worksheet - Annual Examinations For Secondary Schools, 2014 Page 2
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12SECTION A
Each question carries 8 marks. This section carries 40 marks of the total marks for this paper.
1. The Maltese islands are almost totally dependent on fossil fuels as a source of energy.
a)
i) Give an example of a fossil fuel. __________________________________________ [1]
ii) State one advantage of using fossil fuels.
_____________________________________________________________________ [1]
iii) Why are fossil fuels considered to be non-renewable?
_________________________________________________________
____________
[1]
b) Wind energy is more environmentally friendly than fossil fuels. State:
i) one disadvantage of using wind energy,
Figure 1
_______________________________________________________
[1]
ii) two other forms of energy that are considered to be renewable.
_____________________________________________________________________ [2]
c) A wind turbine converts 100 000 J of wind energy into 45 000 J of electrical energy.
Calculate its efficiency.
________________________________________________________________________ [2]
2. In 1738, Daniel Bernoulli, a Swiss physicist, laid the basis for the kinetic theory of
gases. He proposed that gases consist of a large number of particles moving in all
directions.
a) A closed glass container is filled with a gas at room temperature. State
whether each of the following quantities increases, decreases or remains the same as the
gas cools:
Figure 2
i) mass of the gas,
_____________________________________________________________________ [1]
ii) pressure of the gas,
_____________________________________________________________________ [1]
iii) density of the gas,
_____________________________________________________________________ [1]
iv) speed of the gas particles,
_____________________________________________________________________ [1]
Physics – Secondary Schools – Track 2 – Form 3 – 2014
Page 2 of 12
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