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Physics for IGCSE & O level - Forces And Energy (Section 3)

1
What type of energy transformation occurs in a coal-fired power station?
Answer
(B)
Chemical to electrical
2
What is a major advantage of using wave energy?
Answer
(A)
No damage to the environment
3
What is a consequence of burning coal?
Answer
(A)
Creation of sulfur dioxide
4
Why is wind energy considered a renewable resource?
Answer
(B)
Wind is constantly replenished by the sun
5
What type of energy is stored in a stretched rubber band?
Answer
(C)
Elastic (strain) energy
6
What is one disadvantage of solar energy?
Answer
(C)
Intermittent availability
7
What is one problem with nuclear energy?
Answer
B
C
8
Which of these are necessary to do work?
Answer
(D)
A force and a distance
9
What are the main products in a chemical reaction?
Answer
(D)
Heat and light
10
In a simple energy transformation, where does the lost energy go?
Answer
(B)
It converts into heat, sound, or other forms of energy.
11
What is a problem with using fossil fuels?
Answer
A
B
12
What is the source of energy for geothermal power?
Answer
(B)
The Earth's core
13
What is the main function of a wave power generator?
Answer
(A)
To harvest energy from the movement of the ocean waves
14
What is the relationship between potential energy and height?
Answer
(C)
Potential energy increases with height.
15
Which of the following cause air pollution?
Answer
A
B
16
Which of the following converts solar energy directly into electricity?
Answer
(B)
Solar cells
17
Which are ways that energy can be used?
Answer
A
B
C
18
What can you use to reduce the impact of burning wood?
Answer
A
D
19
Which of the following is a form of energy transfer?
Answer
(D)
All of the above.
20
Which of the following is an example of potential energy?
Answer
(B)
A book sitting on a shelf
21
What is needed to determine the efficiency of a machine?
Answer
A
B
22
Which of the following is a form of potential energy?
Answer
(B)
Stretched spring
23
What is the main use of fossil fuels in power stations?
Answer
(D)
All of the above
24
In a car engine, what is the initial source of energy?
Answer
(B)
Chemical energy
25
Which of the following is a good example of elastic potential energy?
Answer
(B)
A stretched rubber band.
26
What is the unit of work?
Answer
(B)
Joule
27
What are the disadvantages of using nuclear power stations?
Answer
(C)
They create small quantities of radioactive waste
28
What is the formula for calculating power?
Answer
(A)
Work / time
29
Which of the following are advantages of solar energy?
Answer
A
B
30
Why do nuclear power stations use uranium?
Answer
(A)
Because it produces a lot of heat
31
What will fossil fuels produce when burned?
Answer
(D)
All of the above
32
What is the role of a dam in a hydroelectric power scheme?
Answer
(A)
To store water
33
Which energy source relies on the Earth's internal heat?
Answer
(C)
Geothermal energy
34
What are the units of power?
Answer
(C)
Watt (W)
35
What is the biggest issue with the use of fossil fuels?
Answer
(C)
They release greenhouse gases
36
Which of the following is an environmental problem associated with using tidal energy?
Answer
A
C
37
What is the unit of power?
Answer
(C)
Watt
38
How do power plants generate electricity?
Answer
(B)
By spinning a turbine which turns a generator
39
Which of the following is an example of a bio fuel?
Answer
(A)
Ethanol
40
What is an example of pollution problems?
Answer
(D)
All of the above
41
What is the efficiency formula?
Answer
(B)
Useful power output / total power input
42
What is a source of power that does not rely on fossil fuels?
Answer
(A)
Nuclear
43
What are the benefits of solar energy?
Answer
A
B
D
44
Which of the following represents a transfer of energy?
Answer
(B)
A change in temperature
45
In the formula W = F × d, what does 'd' represent?
Answer
(A)
Distance moved in the direction of the force
46
What do we call the process of splitting atoms?
Answer
(C)
Nuclear fission
47
What are the advantages of geothermal energy?
Answer
(A)
Reliable
48
How is the energy in the form of light and sound waves described?
Answer
(D)
Radiant energy
49
What type of energy transformation occurs in a coal-fired power station?
Answer
(A)
Chemical to electrical
50
What process does nuclear fission involve?
Answer
(A)
Splitting of atomic nuclei