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IGCSE Physics6.2.1 The Sun as a starQuestion Bank

6.2.1 The Sun as a star

Question 3

[Maximum number: 2]

Fig. 3.1 shows solar cells that use radiation from the Sun to generate electrical power.

Fig. 3.1

Fig. 3.1

Question 3(a)

Question 3(a)(ii)

(a)
(i)

Describe what happens in this process.

[ 2 ]

Question 3

[Maximum number: 2]

Fig. 3.1 shows solar cells that use radiation from the Sun to generate electricity.

Fig. 3.1

Fig. 3.1

Question 3(a)

Question 3(a)(ii)

(a)
(i)

A reaction takes place in the Sun as energy is released.

Describe what happens in this reaction.

[ 2 ]

Question 37

[Maximum number: 1]

The Sun radiates most of its energy in three regions of the electromagnetic spectrum.
In the pie chart, region 1 is infrared radiation and region 2 is visible radiation.

Question image

What is region 3 ?

A

microwave

B

radio

C

ultraviolet

D

X-ray

Question 38

[Maximum number: 1]

What is the main process that powers the Sun?

A

burning of helium and oxygen

B

burning of hydrogen and oxygen

C

nuclear fusion of hydrogen to form helium

D

nuclear fission of helium to form hydrogen

Question 38

[Maximum number: 1]

A type of nuclear reaction takes place in stars.
Which row describes this type of reaction?

nuclear reaction

nuclei formed

energy transfer

fission

larger than original nuclei

released

fission

smaller than original nuclei

absorbed

fusion

larger than original nuclei

released

fusion

smaller than original nuclei

absorbed

Question 39

[Maximum number: 1]

In which regions of the electromagnetic spectrum does the Sun radiate most of its energy?

A

microwave to infrared

B

ultraviolet to X-ray

C

infrared to ultraviolet

D

radio to infrared

Question 39

[Maximum number: 1]

Nuclear reactions in the Sun release large quantities of energy.
Which statement about this process is correct?

A

It involves the fission of helium to produce hydrogen.

B

It involves the fission of hydrogen to produce helium.

C

It involves the fusion of helium to produce hydrogen.

D

It involves the fusion of hydrogen to produce helium.

Question 39

[Maximum number: 1]

The Sun transfers energy to the Earth through electromagnetic radiation.
What are two of the parts of the electromagnetic spectrum to which most of the energy belongs?

A

gamma rays and X-rays

B

infrared radiation and visible light

C

microwaves and visible light

D

radio waves and microwaves

Question 39

[Maximum number: 1]

Which statement about the Sun is correct?

A

The Sun is a dwarf star consisting mostly of hydrogen and oxygen.

B

The Sun is a giant star consisting mostly of helium and carbon dioxide.

C

The Sun is a medium-sized star consisting mostly of hydrogen and helium.

D

The Sun is a medium-sized star consisting mostly of nitrogen and oxygen.

Question 39

[Maximum number: 1]

Which row describes the power source for a stable star?

type of

nuclear reaction

fuel

fission

hydrogen

fission

uranium

fusion

hydrogen

fusion

uranium

0 selected