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 3.3 Electromagnetic spectrum Question Bank

[Maximum number: 1]

Which piece of equipment is designed to produce a type of electromagnetic wave?

electric fire

electric generator

electric motor

electromagnet

[Maximum number: 1]

A radio transmitter is a very tall, thin cylinder. It is prevented from falling over by wires which have one end fixed to the transmitter and the other end fixed in the ground. The ends of the wires in the ground are a long distance from the transmitter.

Fig. 4.1 shows the transmitter and two of the wires.

Fig. 4.1

(a)

The radio transmitter uses radio waves to transmit radio and television programmes. State one other use of radio waves.
[Total: 7]

[ 1 ]

[Maximum number: 2]

Sound waves are longitudinal and electromagnetic waves are transverse.

(a)

Describe one use of X-rays in medicine.

[ 2 ]

[Maximum number: 1]

A student writes four statements matching a communication system to the region of the electromagnetic spectrum that it uses to transmit signals.

Which statement is correct?

Wireless internet uses visible wavelengths.

Mobile phones use X-rays.

Cable television uses infrared wavelengths.

Bluetooth uses ultraviolet wavelengths.

[Maximum number: 1]

The table gives the wavelengths of three electromagnetic waves.

electromagnetic<br>wave	wavelength $/ \mathrm{m}$
P	$3.2 \times 10^{-3}$
Q	$5.0 \times 10^{-9}$
R	$2.6 \times 10^{3}$

Which row correctly identifies P, Q and R ?

microwave

radio wave

X-ray

microwave

X-ray

radio wave

microwave

X-ray

radio wave

X-ray

microwave

[Maximum number: 1]

Which region of the electromagnetic spectrum is used for detecting fake bank notes?

radio

microwaves

ultraviolet

X-rays

(a)

Table 6.1 shows 5 different types of electromagnetic wave.

In the blank column in Table 6.1, write the numbers 1 to 5 to show the order of wavelength. Write 1 for the wave with the shortest wavelength and 5 for the wave with the longest wavelength.

Table 6.1

[ 2 ]

(b)

(i)

State the speed of radio waves in air.

[ 1 ]

[Maximum number: 1]

A television (TV) station transmits a signal to a television receiving dish.
The television has an on/off indicator light.
The television is switched on by a remote control which changes the indicator light from red to green.

Which electromagnetic wave used in these actions has the longest wavelength?

[Maximum number: 1]

The Sun emits infrared radiation and light.
Light from the Sun reaches the Earth in 8 minutes.
Which row gives correct information about the infrared radiation?

wavelength of
infrared radiation

time taken for infrared
radiation to reach the Earth

longer than wavelength of light

8 minutes

longer than wavelength of light

much less than 8 minutes

shorter than wavelength of light

8 minutes

shorter than wavelength of light

much more than 8 minutes

[Maximum number: 1]

The Sun emits infrared radiation and light.
Light from the Sun reaches the Earth in 8 minutes.
Which row gives correct information about the infrared radiation?

wavelength of
infrared radiation

time taken for infrared
radiation to reach the Earth

longer than wavelength of light

8 minutes

longer than wavelength of light

much less than 8 minutes

shorter than wavelength of light

8 minutes

shorter than wavelength of light

much more than 8 minutes

0 selected

Question 16

Question 4

Question 4(c)

Question 5

Question 5(b)

Question 21

Question 21

Question 21

Question 6

Question 6(b)

Question 6(c)

Question 6(c)(i)

Question 22

Question 22

Question 22