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 6.2.2 Stars Question Bank

[Maximum number: 1]

The nearest star to the Sun is 4 light-years away.
A spaceship travels at 0.1 % of the speed of light.
What is the total time taken for a journey from the Sun to the star and back again?

400 years

800 years

4000 years

8000 years

[Maximum number: 1]

In which order are the objects listed formed during the life cycle of a star?

protostar → red giant → supernova → stable star

protostar → stable star → red giant → supernova

red giant → stable star → protostar → supernova

red giant → supernova → protostar → stable star

[Maximum number: 1]

Which statement about the life cycle of a star is correct?

All stars eventually run out of hydrogen as fuel.

A red giant forms a planetary nebula with a supernova at its centre.

A white dwarf star eventually forms a black hole.

Most stars expand and form protostars.

[Maximum number: 1]

The nearest star to the Sun is about four light-years away from the Earth.
A student makes three statements about the star.
1 Light from the star takes about four years to reach the Earth.
2 Light from the Sun takes about four years to travel to the star and back to the Earth.
3 The star is outside our galaxy.
Which statements are correct?

1,2 and 3

1 and 3 only

1 only

2 and 3 only

[Maximum number: 1]

What is the distance travelled by light in one year?

$5.9 \times 10^{15} \mathrm{~m}$

$5.9 \times 10^{15} \mathrm{~km}$

$9.5 \times 10^{15} \mathrm{~m}$

$9.5 \times 10^{15} \mathrm{~km}$

[Maximum number: 1]

The table lists some information about some stars.

Which star will eventually explode as a supernova?

name of star

type of star

temperature $/{ }^{\circ} \mathrm{C}$

Aldebaran

red giant

3700

Betelgeuse

red supergiant

3300

Geminga

neutron star

520000

Sirius B

white dwarf

25000

[Maximum number: 1]

Which stages in the life cycle of a star are listed in the order that they occur?

interstellar dust cloud → stable star → protostar

protostar → red giant → stable star

red giant → white dwarf → protostar

stable star → red giant → white dwarf

(a)

Describe and explain how a stable star is formed.

[ 3 ]

(a)

Fill in the gaps in the paragraph about a star much more massive than the Sun.

The stage that follows the stable state in the life cycle of the star is the stage.

It then explodes as a supernova to form a this leaves behind a or a .

[ 4 ]

[Maximum number: 5]

The Sun is one of many billions of stars in the Milky Way. The Sun emits a very large quantity of energy as electromagnetic radiation.

(a)

Approximately 4.6 billion years ago, the Sun formed from an interstellar cloud of gas and became a stable star.

[ 5 ]

(i)

Describe and explain what happens as an interstellar cloud of gas forms a protostar.

[ 2 ]

(ii)

Describe and explain what happens as a protostar becomes a stable star.

[ 3 ]

0 selected

Question 38

Question 39

Question 39

Question 39

Question 40

Question 40

Question 40

Question 11

Question 11(a)

Question 10

Question 10(c)

Question 9

Question 9(c)

Question 9(c)(i)

Question 9(c)(ii)