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Physics for IGCSE & O level - Forces And Energy (Section 7)

1
What are some examples of energy pathways?
Answer
A
B
C
D
2
What is one of the main problems associated with nuclear power?
Answer
(C)
It produces radioactive waste.
3
Which energy type relies on the movement of water caused by tides?
Answer
(B)
Tidal energy
4
In a simple energy transfer, what happens to the initial energy?
Answer
(C)
It is converted to another form.
5
What is a significant drawback associated with the use of fossil fuels?
Answer
(B)
They release greenhouse gases
6
What energy is mostly wasted in power stations?
Answer
(B)
Thermal
7
In a power station, what is the main function of the turbine?
Answer
(C)
To convert thermal energy into mechanical energy
8
What is 'm' in the PE formula?
Answer
(A)
Mass
9
What type of energy is often transferred as heat?
Answer
(B)
Thermal
10
Which of these is a disadvantage of hydroelectric power?
Answer
(B)
Can cause flooding of land
11
What is a good way to increase the efficiency of a machine?
Answer
(D)
Reduce energy losses.
12
What is one of the biggest problems with solar panels?
Answer
(A)
They do not work at night.
13
What type of energy is used to make electricity in a thermal power station?
Answer
(A)
Thermal energy
14
Which gas is released by burning fossil fuels and contributes to global warming?
Answer
(B)
Carbon Dioxide
15
What are the main environmental benefits of using renewable energy resources?
Answer
A
B
D
16
What is a main problem associated with solar energy?
Answer
(A)
Limited amount of sunlight available
17
What are the main applications of the solar energy?
Answer
A
B
C
D
18
What gas is released when burning fossil fuels, and contributes to greenhouse effect?
Answer
(C)
Carbon dioxide
19
What are some problems associated with using fossil fuels?
Answer
A
B
20
In a thermal power station, what type of energy is released to turn a turbine?
Answer
(B)
Thermal
21
What causes the tides?
Answer
(B)
The moon
22
In the efficiency formula, what does the numerator represent?
Answer
(C)
Useful energy output
23
Which of the following is the Law of Conservation of Energy?
Answer
(D)
Energy can be stored or transformed, but it cannot be created or destroyed
24
The waste from the nuclear stations are:
Answer
(D)
Dangerous to the enviroment
25
What is one major problem of using solar energy?
Answer
(C)
Variable amount of sunlight
26
What are the potential benefits of using renewable energy sources?
Answer
A
C
27
What is the primary source of energy for the Earth?
Answer
(B)
The sun
28
What energy source is associated with 'geothermal' power?
Answer
(A)
Heat from the Earth
29
What is the main cause of global warming?
Answer
(B)
Fossil fuels
30
What is needed to calculate PE?
Answer
(A)
Mass, gravity, and height
31
Which renewable energy source is described as using the up and down motion of water?
Answer
(B)
Wave energy
32
What type of fuel does a nuclear power station use?
Answer
(C)
Uranium
33
Which form of energy is associated with the random motion of particles?
Answer
(B)
Thermal energy
34
What type of energy is extracted from the up and down motion of the sea?
Answer
(B)
Wave energy
35
How much work is done when a force of 1 N moves an object 1 meter in the direction of the force?
Answer
(B)
1 Joule
36
What types of waste do Nuclear stations generate?
Answer
(A)
Radioactive
37
What is the unit used to measure energy?
Answer
(C)
Joule (J)
38
Which energy source involves the use of underground heat?
Answer
(C)
Geothermal
39
What energy is in a moving object?
Answer
(B)
Kinetic energy
40
What is the energy source that is used in solar panels?
Answer
(B)
Sunlight
41
What is needed for energy transfer?
Answer
(A)
A force that makes something move
42
What type of energy is in the water behind a dam?
Answer
(B)
Potential
43
What is a measure of how much work can be done?
Answer
(A)
Energy
44
Which energy source is used by wind turbines?
Answer
(C)
Wind
45
What is a synonym for wasted energy?
Answer
(C)
Thermal energy
46
What does the formula for kinetic energy depend on?
Answer
(C)
The mass and speed of the object.
47
What is the process called when natural gas is extracted from rock?
Answer
(C)
Fracking
48
What is the source of the energy in a hydroelectric power scheme?
Answer
(C)
Water
49
What do we call the process where we split an atom for energy?
Answer
(B)
Fission
50
What is the energy source that relies on the sun's energy?
Answer
(C)
Solar