Physics for IGCSE & O level - Forces And Energy (Section 8)
1
Respondre(A)
It transfers energy from one form to another.
2
Which of these is NOT a consequence of burning fossil fuels?
3
Which of the following increases the kinetic energy of a moving object?
4
What happens to potential energy when an object falls?
5
What do solar panels directly convert?
Respondre(C)
Light energy into electricity
6
Which of the following describes a disadvantage of hydropower?
Respondre(B)
Often leads to flooding of land
7
Which of the following is NOT explicitly mentioned as a 'Pollution Problem'?
8
What is the main job of the generator in a power station?
Respondre(B)
To convert mechanical energy into electrical energy
9
What is a potential drawback of hydroelectric power?
Respondre(B)
They can lead to flooding
10
What is the main fuel source used for the operation of a nuclear power station?
11
What are some of the potential advantages of renewable energy resources?
12
Which factor is used to calculate gravitational potential energy?
Respondre(A)
Mass, gravity, and height
13
What do wind turbines convert into electricity?
14
What is the main goal of using renewable energy sources?
Respondre(A)
To decrease environmental damage
15
What happens when a moving object slows down?
Respondre(A)
Its kinetic energy decreases.
16
What are the main components of the global energy supply?
17
What is the formula for gravitational potential energy (PE)?
18
Which of the following sources are considered as renewable?
19
What type of energy does a solar panel directly convert?
20
What is the unit of power?
21
How is electrical energy produced from thermal energy?
22
In a thermal power station, where does the thermal energy come from?
Respondre(C)
Burning fossil fuels or nuclear fission
23
Which of the following is NOT a renewable energy resource discussed?
24
What are some of the disadvantages of the use of solar energy?
25
What is the energy used to boil water at a thermal power station?
26
What is the primary source of energy in a nuclear power station?
27
Which one is not a type of renewable energy?
28
If an object is not moving and at rest, what type of energy does it possess?
29
How is the gravitational potential energy of an object affected if its height above the ground is doubled?
30
What is the process of extracting shale gas called?
31
What is the main benefit of using renewable energy sources?
Respondre(B)
They don't release greenhouse gases.
32
What is one of the main environmental disadvantages of using coal?
33
What unit measures the amount of energy?
34
What are some environmental concerns linked to nuclear power?
35
What are the main materials to produce solar panels?
36
What is the purpose of a turbine in a power station?
Respondre(B)
To convert thermal energy to mechanical energy
37
What does 'g' represent in the PE formula?
38
What type of energy is derived from the Earth's internal heat?
39
What is a key problem associated with the use of fossil fuels?
Respondre(C)
They contribute to air pollution.
40
Which type of energy is converted into electrical energy by a generator?
41
What is the term for the transfer of energy due to a force causing an object to move?
42
What is a common environmental impact of using fossil fuels?
Respondre(A)
Release of greenhouse gases
43
What does the term "fracking" refer to in energy production?
44
What type of energy is used to operate a wind turbine?
45
What is the formula to calculate gravitational potential energy?
46
How is the efficiency of a power station improved?
47
In a power station diagram, what does the generator do?
Respondre(A)
Convert energy from steam to electricity
48
What type of energy source is shale gas?
49
Which of the following is a benefit of solar power?
50
What is the main purpose of using renewable energy sources?
Respondre(B)
To decrease environmental damage
