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 5.2.5 Safety precautions Question Bank

[Maximum number: 1]

Which statement gives two safety precautions to take when a person is working with ionising radiation?

decrease exposure time and decrease distance between the person and the source

decrease exposure time and increase distance between the person and the source

increase exposure time and decrease distance between the person and the source

increase exposure time and increase distance between the person and the source

[Maximum number: 1]

What is the safest way to store a radioactive source?

in a lead-lined box in a metal cabinet

on a shelf away from other radioactive materials

in a glass bottle containing oil

in a fume cupboard

[Maximum number: 1]

Several scientists are working in a laboratory. The scientists are experimenting with sources which emit ionising radiation. Each scientist is given a list of safety rules.

Three of the rules are shown.
1 Keep at least 2 m away from other people.
2 Do not stay longer than 4 hours per day in the laboratory.
3 Stay behind the lead-lined screen.
Which safety rules are for protection against the effects of ionising radiation?

1, 2 and 3

1 and 2 only

1 and 3 only

2 and 3 only

[Maximum number: 1]

Why are some radioactive sources stored in boxes made from lead?

Lead absorbs emissions from the radioactive sources.

Lead decreases the half-life of radioactive sources.

Lead increases the half-life of radioactive sources.

Lead repels emissions from the radioactive sources.

[Maximum number: 1]

Why are some radioactive sources stored in boxes made from lead?

Lead absorbs emissions from the radioactive sources.

Lead decreases the half-life of radioactive sources.

Lead increases the half-life of radioactive sources.

Lead repels all radioactive emissions.

[Maximum number: 1]

A scientist carries out an experiment using a sealed source which emits $\beta$ -particles. The range of the $\beta$ -particles in the air is about 30 cm .

Which precaution is the most effective to protect the scientist from the radiation?

handling the source with long tongs

keeping the temperature of the source low

opening all windows in the laboratory

washing his hands before leaving the laboratory

[Maximum number: 1]

Why are some radioactive sources stored in boxes made from lead?

Lead absorbs emissions from the radioactive sources.

Lead decreases the half-life of radioactive sources.

Lead increases the half-life of radioactive sources.

Lead repels emissions from the radioactive sources.

[Maximum number: 1]

Why are some radioactive sources stored in boxes made from lead?

Lead absorbs emissions from the radioactive sources.

Lead decreases the half-life of radioactive sources.

Lead increases the half-life of radioactive sources.

Lead repels emissions from the radioactive sources.

(a)

Radioactive isotopes that emit ionising radiation are used in hospitals.

[ 2 ]

(i)

State and explain two safety precautions necessary for the use of these isotopes in medical procedures.
safety procedure 1

explanation
safety procedure 2
explanation

[ 2 ]

(a)

State two safety precautions taken when moving, using or storing radioactive sources in a laboratory.

1

2

[ 2 ]

0 selected

Question 35

Question 36

Question 36

Question 37

Question 37

Question 39

Question 40

Question 40

Question 9

Question 9(a)

Question 9(a)(i)

Question 9

Question 9(d)