1. Motion, forces and energy

1.1 Physical quantities and measurement techniques

1.2 Motion

1.3 Mass and weight

1.4 Density

1.5.1 Effects of forces

1.5.2 Turning effect of forces

1.5.3 Centre of gravity

1.6 Momentum

1.7.1 Energy

1.7.2 Work

1.7.3 Energy resources

1.7.4 Power

1.8 Pressure

2. Thermal physics

2.1.1 States of matter

2.1.2 Particle model

2.1.3 Gases and the absolute scale of temperature

2.2.1 Thermal expansion of solids, liquids and gases

2.2.2 Specific heat capacity

2.2.3 Melting, boiling and evaporation

2.3.1 Conduction

2.3.2 Convection

2.3.3 Radiation

2.3.4 Consequences of thermal energy transfer

3. Waves

3.1 General properties of waves

3.2.1 Reflection of light

3.2.2 Refraction of light

3.2.3 Thin lenses

3.2.4 Dispersion of light

3.3 Electromagnetic spectrum

3.4 Sound

4. Electricity and magnetism

4.1 Simple phenomena of magnetism

4.2.1 Electric charge

4.2.2 Electric current

4.2.3 Electromotive force and potential difference

4.2.4 Resistance

4.2.5 Electrical energy and electrical power

4.3.1 Circuit diagrams and circuit components

4.3.2 Series and parallel circuits

4.3.3 Action and use of circuit components

4.4 Electrical safety

4.5.1 Electromagnetic induction

4.5.2 The a.c. generator

4.5.3 Magnetic effect of a current

4.5.4 Force on a current-carrying conductor

4.5.5 The d.c. motor

4.5.6 The transformer

5. Nuclear physics

5.1.1 The atom

5.1.2 The nucleus

5.2.1 Detection of radioactivity

5.2.2 The three types of nuclear emission

5.2.3 Radioactive decay

5.2.4 Half-life

5.2.5 Safety precautions

6. Space physics

6.1.1 The Earth

6.1.2 The Solar System

6.2.1 The Sun as a star

6.2.2 Stars

6.2.3 The Universe

IGCSE Physics 1.7.3 Energy resources Question Bank

(a)

Consider this bicycle compared to a small motorcycle.

State two environmental benefits of the electrically powered bicycle.
1.
2.

[ 2 ]

[Maximum number: 5]

Fig. 2.1 shows a fork-lift truck lifting a box.

Fig. 2.1

The electric motor that drives the lifting mechanism is powered by batteries.

(a)

The lifting mechanism raises a box of mass 32 kg through a vertical distance of 2.5 m in 5.4 s .

[ 3 ]

(i)

The efficiency of the lifting mechanism is 0.65(65 %).

Calculate the input power to the lifting mechanism.

input power =

[ 3 ]

(b)

The batteries are recharged from a mains voltage supply that is generated in an oil-fired power station.

By comparison with a wind farm, state one advantage and one disadvantage of running a power station using oil.
advantage
disadvantage

[ 2 ]

(a)

State two energy resources for which the Sun is not the main source.

1
2

[ 2 ]

(b)

State and explain whether each of the following methods of electrical power generation is renewable.

[ 4 ]

(i)

power generation in a nuclear power station
statement
explanation

[ 2 ]

(ii)

power generation from waves in the sea
statement
explanation

[ 2 ]

[Maximum number: 5]

Fig. 2.1 shows solar-powered traffic warning lights.

Fig. 2.1

The energy from the solar cell is stored in a battery.

(a)

The efficiency of the solar cell is 22%. The power supplied to the lights by the cell is 15 W.

[ 3 ]

(i)

State what is meant by 22% efficiency.

[ 1 ]

(ii)

Calculate the solar power input to the solar cell.
power =

[ 2 ]

(b)

Suggest two advantages of using a solar cell to power the traffic warning lights in Fig. 2.1 compared to using mains electricity.

1
2

[ 2 ]

(a)

State one advantage and one disadvantage of using a wind turbine as a source of electrical energy.
advantage
disadvantage

[ 2 ]

(b)

Fig. 2.1 shows a wind turbine.

Fig. 2.1

[ 1 ]

(i)

Suggest why some of the kinetic energy of the air that passes through the circular area swept out by the blades is not converted into electrical energy.

[ 1 ]

[Maximum number: 3]

Fig. 2.1 shows a simplified version of a 'gravity lamp'. This apparatus is used to light a light-emitting diode (LED) without mains electricity.

Fig. 2.1

The load of 12 kg is raised to a height of 1.7 m above the ground. The load is connected to a pulley system. The time taken for the load to fall to the ground is 1200 seconds. The load falls at constant speed. The generator is connected to an LED.

(a)

The light output of the LED is 0.10 W . Calculate the efficiency of the 'gravity lamp'.
efficiency =

[ 2 ]

(b)

Suggest a social or environmental advantage of using a 'gravity lamp'.

[ 1 ]

[Maximum number: 1]

The table gives four energy resources and states whether the main source of energy for the resource is the Sun.

Which row is correct?

energy resource

main source of
energy is the Sun

geothermal

yes

oil

water held behind a dam

yes

wind

[Maximum number: 5]

Water is held behind a dam in a hydroelectric power scheme.

(a)

The water is released from the dam and falls a vertical height of 410 m at a rate of $480 \mathrm{~kg} / \mathrm{s}$ .

[ 3 ]

(i)

The power scheme supplies a current of 270 A at a voltage of 6000 V .

Calculate the efficiency of the power scheme.

efficiency =......................................................... [3]

[ 3 ]

(b)

Hydroelectric energy is a renewable form of energy.

[ 2 ]

(i)

State one disadvantage of hydroelectric power schemes.

[ 1 ]

(ii)

State one other renewable source of energy.

[ 1 ]

[Maximum number: 1]

Electrical energy may be obtained from nuclear fission.
In which order is the energy transferred in this process?

nuclear fuel → generator → reactor and boiler → turbines

nuclear fuel → generator → turbines → reactor and boiler

nuclear fuel → reactor and boiler → generator → turbines

nuclear fuel → reactor and boiler → turbines → generator

[Maximum number: 1]

Electrical energy may be obtained from nuclear fission.
In which order is the energy transferred in this process?

nuclear fuel → generator → reactor and boiler → turbines

nuclear fuel → generator → turbines → reactor and boiler

nuclear fuel → reactor and boiler → generator → turbines

nuclear fuel → reactor and boiler → turbines → generator

0 selected

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Question 1(c)

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Question 7

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