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Physics for IGCSE & O level - Forces And Energy (Section 4)

1
Which of the following is NOT a fossil fuel?
Answer
(C)
Solar
2
What is the relationship between work, force, and distance?
Answer
(C)
Work = Force * Distance
3
What does the Law of Conservation of Energy state?
Answer
(D)
Energy can be stored or transformed, but it cannot be created or destroyed.
4
What are the key components of a chemical reaction?
Answer
(C)
Fuel and oxygen
5
Which form of energy is used to power a car?
Answer
(C)
Chemical
6
Which of the following is the best example of the law of conservation of energy in action?
Answer
(A)
A light bulb converting electrical energy into light and heat.
7
What is the relationship between kinetic energy (KE), mass (m), and velocity (v)?
Answer
(B)
KE = 1/2 * m * v^2
8
Which device converts energy from the movement of steam?
Answer
(B)
A turbine
9
Which energy transformation occurs in a hydroelectric power plant?
Answer
(D)
Potential to electrical
10
Which of the following is a type of renewable energy?
Answer
(B)
Solar
11
Which of these is a renewable energy source?
Answer
A
C
12
A 100 kg block is moved a height of 10m. What is the useful work output?
Answer
(A)
9800 J
13
Which factor does NOT affect kinetic energy?
Answer
(C)
Height
14
What type of energy is stored in a food chain?
Answer
(A)
Chemical
15
Which energy resource has the potential to significantly reduce greenhouse gas emissions?
Answer
(D)
Solar
16
What is a characteristic of non-renewable energy sources?
Answer
(B)
Finite in amount.
17
What does the term 'kinetic energy' represent?
Answer
(B)
Energy due to the motion of an object
18
In terms of its effects, what is the best form of energy?
Answer
(C)
The one that is very effective and does not harm the environment.
19
What two things are needed to create a fire?
Answer
(B)
Oxygen and fuel
20
What is the source of energy for tidal power generation?
Answer
(C)
The moon's gravitational pull
21
What type of energy is involved in the flow of a river?
Answer
(B)
Kinetic energy
22
What is the definition of "efficiency" in a machine?
Answer
(B)
The useful work done divided by the total energy input.
23
What is the work done when a force of 1 Newton causes an object to move 1 meter in the direction of the force?
Answer
(A)
1 joule
24
What is a main component of acid rain?
Answer
(B)
Sulfur Dioxide
25
What is the key ingredient in a biofuel?
Answer
(C)
Organic Matter
26
In a power plant, what does the boiler do?
Answer
(B)
Heat water to produce steam.
27
Which energy source relies on the sun?
Answer
(A)
Wind energy
28
What is the formula used to calculate efficiency?
Answer
(A)
Efficiency = (useful energy output) / (total energy input) * 100%
29
What are possible problems of Hydroelectric power?
Answer
A
B
30
Which of the following is a form of renewable energy?
Answer
B
C
31
What is a key environmental benefit of using biofuels?
Answer
(C)
They can reduce reliance on fossil fuels
32
Which energy resource does not generate any air pollution?
Answer
(C)
Nuclear
33
What is a use of biofuel?
Answer
B
C
34
What are some of the environmental problems associated with renewable energy sources?
Answer
A
B
C
35
Which of the following is an example of a renewable energy source?
Answer
B
C
36
Which of these are sources of energy?
Answer
B
C
D
37
What is the unit for the efficiency of an engine?
Answer
(C)
Percentage
38
What is the purpose of a turbine in a power plant?
Answer
(B)
To turn a generator
39
What are the negative impacts that burning coal causes?
Answer
A
B
C
40
What is the main function of a generator?
Answer
(B)
To convert kinetic energy to electrical energy
41
Which of the following are examples of non-renewable energy sources?
Answer
(B)
Coal, oil, and natural gas
42
What does the chemical process of burning involve?
Answer
(A)
Releasing energy
43
What are some problems associated with using fossil fuels?
Answer
A
B
C
D
44
Which of these statements about renewable resources are true?
Answer
B
C
D
45
Which of the following are disadvantages of using solar panels?
Answer
A
C
46
What does the motor need to provide for a 700N force moving 50m in 10 sec to balance the total frictional forces?
Answer
(B)
3500 J
47
What does KE stand for?
Answer
(A)
Kinetic energy
48
Which of the following are problems that may be associated with using renewable energy sources?
Answer
A
B
49
Which type of fuel is used in nuclear power plants?
Answer
(B)
Uranium
50
Which process is used to describe the flow of energy from one place to another?
Answer
(D)
All the above