A
The air contracts and becomes less dense.
B
The air contracts and becomes more dense.
C The air expands and becomes less dense.
Name: ________________________________
D The air expands and becomes more dense.
Conduction
Physics IGCSE (2023)
02 Thermal Physics – Worksheet 5
Grade: ___________
Date: __________
1.17 Four rods are made from different metals P, Q, R and S. The rods have equal lengths and equal
diameters. The rods are heated at one end, in the same way.
The table shows the time taken for the temperature at the other end of each rod to rise by 1.0 °C.
Which metal is the best conductor of thermal energy (heat)?
A
metal P
B
metal Q
metal
time taken / s
P
35
Q
30
R
45
S
40
C
metal R
D
metal S
2.
metal bar
metal bar
wax
heat
melted wax strip
experiment 2
experiment 1
© UCLES 2015
pin
heat
0625/11/O/N/15
1
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Prepared by Chermaine Lim (2021)
2014
liquid density
radiation
= 3.1 g / cm3
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liquid density
= 1.2 g / cm3
A
B
10
liquid density
= 1.3 g / cm3
liquid density
= Physics
0.8 g / cm3IGCSE (2023)
02 Thermal
Physics – Worksheet 5
10 D
C
3.
18 Brownian
A copper bar
and ais
wooden
bar A
are
joined.
A and
piece
paper bar
isto
wrapped
around
the join.
3.14
18
copper
bar
a of
wooden
are
joined.
A piece
of paper
is air.
wrapped tightly around the
motion
observed
when
using
a microscope
look
attightly
smoke
particles
in
19 Which line in the table shows theheat
relative expansion of the three states of matter from the most
A
B
C
D
expansion to the least expansion?
The bar is heated strongly at the
centre
for
a
short
time,
and
the
paper
goes
brown
on one
bar
is heated
strongly
atand
the copper?
centre for a short time,
and side
the paper goes brown on o
Which causes
side goes
brown,
andparticles
whatThe
does
show
wood
What
the
smoke
tothis
move
atabout
random?
only.
only.
most expansion
least expansion
19 Which line in the table shows the relative expansion of the three states of matter from the most
A Smoke
particles
are hitwood
by air
molecules.
brown
side
copper
wood
paperliquids
copper
expansion to theA least expansion?
woodgases
paper copper
solids
>
>
B A Smoke
particles
are
moved by >convection
currents in
copper
conductor
insulator
B
solids
gases
> the air.liquids
most expansion
least expansion
C
gases
liquids
>
solids
copper
insulator
conductor
C B Smoke
particles
have
different >weights
and fall at different
speeds.
D
A
C
B
D
D
solids
wood
gases
>
>
conductor
solids
liquids
insulator
>
gases
conductor
[Turn
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heat
>
Smoke particles hit the walls of the container.
solids
wood
0625/02/SP/16
>
insulator
1010
20 The diagram shows a liquid-in-glass thermometer.
>
liquids
gases
liquids
heat
student
air
through
aWhich
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using
astem
straw.
causes
the
to evaporate
and
4.15 A
brown,
and what
thisliquid
show about
wood andquickly
copper?
Which
sideblows
goes brown,
and what
doesside
this goes
show
about This
wood
anddoes
copper?
glass bulb
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0625/02/SP/16
4.©44UCLES
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investigating
type
of of
container
thethe
timetime
taken
for water
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student
investigatingwhether
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therefore
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2014
0625/02/SP/16
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gases
>whetherthe
solids
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liquids
heated from
room
temperature
to boiling
point.
heated
from
point.
brown
side
wood
copper
brownroom
side temperature
woodto boiling
copper
10
20
30
40 cools?
50
60
70
80
90
100
110 °C
Which statement explains why–10the0remaining
liquid
The
apparatus
available:
A
copper
conductor
insulator
A following
copper
conductor
insulator
The
following
apparatusisis
available:
20 The diagram shows a liquid-in-glass thermometer.
A Slower-moving molecules are
away by theinsulator
air bubbles. conductor
B carried
copper
B 250 cm
copper
conductor
33 copper
liquidcan insulator
liquid
copper can
250 cm
glass
bulb
stem the
3molecules
thread
B C The
conduct
liquid. conductor
can
250
cm
3 aluminium
Cheat from
wood
insulator
wood
conductor
insulator
aluminium
can
250air
cm
3
glass
beaker
250
cm
3
Which
features bothDaffect the sensitivity
of the thermometer?
glass
beaker
250air
cm
insulator
conductor
C D The
sets
uptwo
convection
currents wood
inconductor
the liquid.
wood
insulator
Bunsen
Bunsen burner
burner
–10
0
10
20
30
40
50
60
70
80
90
100
110 °C
A cylinder
mass of liquid and diameter of liquid thread
measuring
measuring
cylinder
D The
molecules
with most energy leave the liquid.
thermometer
B mass of liquid and length of stem
thermometer
tripod and gauze
C gauze
thickness of glass bulb and diameter of liquid thread
tripod and
stopwatch
liquid
liquid
16 What stopwatch
is meant
by
the specific
heat
ofoffusion
D thickness
of glasslatent
bulb and
length
stem of ice?
C
gases
>
liquids
>
solids
thread
Other apparatus normally available in the school laboratory is also available.
AOther
theapparatus
energy needed
to change
unit
mass
of icelaboratory
into waterisatalso
constant
temperature
available
in the
school
available.
Which two
featuresnormally
both affect
the sensitivity
of the thermometer?
an energy
experiment
to investigate
the type
of container
affects
the timetemperature
taken for water to
BPlanthe
needed
to changewhether
unit volume
of ice
into water
at constant
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0625/02/SP/16
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an experiment
investigate
the
type of container affects the time[Turn
taken
for water
©from
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2014
0625/02/SP/16
over
APlan
mass
of
liquid
andto
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be 2014
heated
room
temperature
towhether
boiling
point.
Prepared
by
Chermaine
Lim
(2020)
1
fromneeded
room temperature
boiling
point. increase of unit mass of ice
Cbe heated
the energy
to produce to
unit
temperature
B mass of liquid and length of stem
You should:
D
the
energy
to and
produce
unitoftemperature
You
should:
C thickness
of needed
glass bulb
diameter
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• explain briefly how you would carry out the investigation
D• thickness
of glass
bulbyou
andwould
lengthcarry
of stem
explain briefly
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out the investigation
• state the key variables that you would control
state the key variables that you would control
•
© UCLES 2017
0625/22/M/J/17
[Turn over
• draw a table, or tables, with column headings to show how you would display your readings
not required
to enter
any readings
in thetotable)
draware
a table,
or tables,
with column
headings
show how you would display your readings
• (you
© UCLES 2014
0625/02/SP/16
[Turn over
(you are not required to enter any readings in the table)
• explain briefly how you would use your readings to reach a conclusion.
© UCLES 2017
0625/21/M/J/17
explain briefly how you would use your readings to reach a conclusion.
•..........................................................................................................................................................
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© UCLES
2017
0625/21/M/J/17
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Prepared by Chermaine Lim (2021)
2
15 A block of copper and a block of lead are heated. The internal energy of each block increases by
Physics IGCSE (2023)
the same amount.
02 Thermal Physics – Worksheet 5
The block of copper has a lower thermal capacity than the block of lead.
Convection
Which conclusion can be made from this information?
1.
A The temperature increase of the copper is greater than the temperature increase of the lead.
B
The temperature increase of the copper is the same as the temperature increase of the lead.
C
The temperature increase of the copper is less than the temperature increase of the lead.
D
The melting point of copper is lower than the melting point of lead.
2.16 In a refrigerator, the cooling unit can be fitted either at the top or at the bottom. In an oven, the
heater can be fitted either at the top or at the bottom.
Which row shows the best position for the cooling unit and the best position for the heater?
cooling unit
heater
A
bottom
bottom
B
bottom
top
C
top
bottom
D
top
top
9
3. 17 A cupboard is placed in front of a heater. Air can move through a gap under the cupboard.
17 A girl is outdoors. She warms her hands by holding them near a fire, as shown.
hands
wall
fire
cupboard
heater
How does the heat from the fire reach her hands?
A
conduction only
B
convection and conduction
air moves through gap
floor
Which
row describes
the temperature, and the direction of movement, of the air in the gap?
C
convection
and radiation
D
radiation only
air temperature
air direction
A
cool
away from the heater
B
cool
towards the heater
C
warm
away from the heater
D
warm
towards the heater
© UCLES 2015
0625/12/O/N/15
3
[Turn over
Prepared by Chermaine Lim (2021)
Heat Transfer and State Changes
Heat
Physics IGCSE (2023)
02 Thermal Physics – Worksheet 5
11
1.
4. 23 The diagram shows some ice being used to lower the temperature of some warm water.
11
e diagram shows some ice being used to lower the temperature of some warm water.
What
the main
process
the water
at the
bottom of the glass becomes c
What is the main process by which
theiswater
at the
bottomby
ofwhich
the glass
becomes
cool?
ice
A
condensation
B
conduction
warm water
A
condensation
B
conduction7
ice
glass
C convection
13 Four
different liquids are pouredCintoconvection
four containers. warm water
glass D radiation
D radiation
The
diagrams show the depth and the density of liquid in each container.
In which container is the pressure on its base
9 the greatest?
79
A shows four beakers A,
B B, C and D. The beakers
C contain different amounts
D
2. 18 The diagram
of the
The diagram
showsby
foura beakers
A, B, C diagram
and D. Theshows
beakers the
contain
different amounts
ofair
thein the room.
The
in 18
a at
room
heated
heater.
circulation
of athe
sameairliquid
the is
same
temperature.
TheThe
beakers are left
next to each
other on
laboratory
hat is the main process by which the water at the bottom of the glass becomes cool?
condensation
5.16
same liquid at the same temperature. The beakers are left next to each other on a laboratory
conduction
bench overnight.
The
diagrams
all drawn
thetosame
scale.
bench
overnight.
The are
diagrams
are all to
drawn
the same
scale.
10
convection
radiation
From which
does thequantity
largest quantity
of liquid
evaporate?
From which beaker
doesbeaker
the largest
of liquid
evaporate?
circulation
is the
by are
which
the Awater
bottom
of thetightly
glassaround
becomes
cool?
18 What
A copper
bar main
and a process
wooden bar
joined.
pieceatofthe
paper
is wrapped
the join.
of air
40 cm
A
condensation
The bar
is heated strongly at the centre for a short time, and the paper goes brown on one side
30 cm
only.
20 cm
room
B conduction10 cm
heater
wood paper copper
C convection
liquid density
liquid density
liquid density
liquid density
D radiation
3
3
3
= 3.1 g / cm
= 1.2 g / cm
= 1.3 g / cm
= 0.8 g / cm3
10
A
B
C
Which statement about
the air that
is heated is correct?
10 D
3.14
18 Brownian
A copper bar
and ais
wooden
bar A
are
joined.
A and
piece
paper bar
isto
wrapped
around
the join.
18
copper
bar
a of
wooden
are
joined.
A piece
of paper
is air.
wrapped tightly around the join.
motion
observed
when
using
a
microscope
look
attightly
smoke
particles
in
heat
A The
becomes
less
dense.
19 contracts
Which line inand
the
shows the
relative
expansion
of the three states of matter
from the most
A air
B table
C
D
The bar is heated strongly at the
centre
forheated
a shortstrongly
time, and
thecentre
paper goes brown on one side
The
bar
is
atand
the
Which
sideair
goes
brown,
and
what
does
show
about
wood
copper?for a short time, and the paper goes brown on one s
What
causes
the
smoke
particles
tothis
move
at
random?
B
The
contracts
and
becomes
more
dense.
only.
expansion to the least expansion?
only.
most expansion
least expansion
19 Which line in the table shows the relative expansion of the three states of matter from the most
C Smoke
Thebrown
air particles
expands
andhitbecomes
less dense.
A
are
by air
molecules.
side
wood
copper
wood
paper
copper
expansion
to the
woodgases
paper copper
A least expansion?
solids
>
liquids
>
D A Smoke
The air
expands
and
becomes
moreinsulator
dense.
B
particles
are
moved
by >convection
currents in
copper
conductor
B
solids
gases
> the air.liquids
most expansion
2014
least expansion
C
gases
liquids
>
solids
copper
insulator
conductor
C B Smoke
particles
have
different >weights
and fall at different
speeds.
Radiation
D
gases
> liquids
solids
liquids
A rods are
solids
>
> >S. Thegases
C
wood
conductor
insulator
17 D
Four
made
from
P,
Q, R and
rods
have equal lengths and equal
Smoke particles
hit
thedifferent
walls of metals
the container.
diameters.
The
rods
are
heated
at
one
end,
in
the
same
way.
1.
ForD
the
design
is >
meant to be
one
of the following:
Bthe following
solidsscenarios,
> indicate ifgases
liquids
wood
insulator
conductor
0625/02/SP/16
[Turn
over
heat
heat
20 The diagram shows a liquid-in-glass thermometer.
C good
gasesthe time taken
> good
liquids
> the
solids
thermal
thermal
poor
thermal
poor
°C.
The
table
shows
forside
the
temperature
other
end
of each
rod
rise
bythermal
1.0
student
air
through
aWhich
liquid
using
astem
straw.
causes
the
liquid
to evaporate
quickly
and
4.15 A
goes
brown,
andatwhat
this
show
about
woodtoand
copper?
Which
sideblows
goes brown,
and what
does
this
show
about This
wood
anddoes
copper?
glass bulb
©
UCLES
2014
0625/02/SP/16
radiator
absorber
radiator
therefore
to cool.
© UCLES
0625/02/SP/16 >
[Turn
over
D2014absorber
gases
>
solids
liquids
Which metal
is
the
best
conductor
of
thermal
energy
(heat)?
browncopper
side
wood
copper
brown side
wood
–10the0remaining
10
20
30
40 cools?
50
60
70
80
90
100
110 °C
WhichSolar
statement
liquid
a)
panelsexplains
are darkwhy
coloured.
A
copper
conductor
insulator
A
copper
conductor
insulator
metal
time taken / s
20 The diagram shows a liquid-in-glass thermometer.
A Slower-moving molecules are
away by theinsulator
air bubbles. conductor
B carried
copper
B
copper liquid
insulator
conductor
liquid
b) glass
Astronaut
suits
are
shiny.
P the
35
bulb
stem
thread
B C The air
molecules conduct
liquid. conductor
Cheat from
wood
insulator
wood
conductor
insulator
Qsensitivity
30
Which two features bothDaffect the
of
the
thermometer?
insulator
conductor
C D The
airwood
sets
convection
currents wood
inconductor
thepainted
liquid. in
insulator
c)
Cooling
finsupbehind
the refrigerator
are
black.
–10
0
10
20
30
40
50
60
70
80
90
100
110 °C
A mass of liquid and diameter R
of liquid thread 45
D The molecules with most energy leave the liquid.
B mass of liquid and length of stem
d)
Petrol tankers
are usually white S
or silver.
40
liquid
C
liquid
thickness of glass bulb and diameter of liquid thread
16 What is meant
the specific
latent
heat
ofoffusion
of ice?
D by
thickness
glass
bulb
and
length
thread
A metal
P usually
B ofmetal
Q surface.
C stem
metal R
D metal S
e)
Kettes
have
a shiny
A the energy needed to change unit mass of ice into water at constant temperature
Which two features both affect the sensitivity of the thermometer?
f)B the
Light
coloured
winter
jacketsunit
arevolume
more popular
than
dull at
ones.
energy
needed
to change
of ice into
water
constant temperature
© UCLES
0625/02/SP/16
[Turn over
© UCLES
2014
0625/02/SP/16
[Turn over
A 2014
mass of
liquid
and diameter of liquid thread
Prepared
by
Chermaine
Lim (2020)
1
C the energy needed to produce unit temperature increase of unit mass of ice
B
mass of liquid and length of stem
D
C
the energy
to and
produce
unitoftemperature
thickness
of needed
glass bulb
diameter
liquid threadincrease of unit volume of ice
D
thickness of glass bulb and length of stem
4
Prepared by Chermaine Lim (2021)
Physics IGCSE (2023)
02 Thermal Physics – Worksheet 5
8
2.16 One method of heat transfer involves the energy travelling at a much greater speed than in other
methods.
What is the name of this method?
A
conduction
B
convection
C
evaporation
D
radiation
3.
17 A cupboard is placed in front of a heater. Air can move through a gap under the cupboard.
wall
cupboard
heater
4.
When drying clothes under the Sun, we always spread air
outmoves
the clothes.
through gap
floor
Which row describes the temperature, and the direction of movement, of the air in the gap?
air temperature
air direction
A
cool
away from the heater
B
cool
towards the heater
C
warm
away from the heater
D
warm
towards the heater
Explain the rationale of this act from the perspective of heat transfer and change of state.
Heat Transfer
18 What is the frequency of a wave?
Change of state
A
the distance that a wavefront travels every second
B
the distance from one wavefront to the next
C
the number of wavefronts produced per second
D
the time taken for a wavefront to pass a certain point
© UCLES 2015
0625/13/M/J/15
5
Prepared by Chermaine Lim (2021)
7
5. 5
Physics IGCSE (2023)
02 Thermal Physics – Worksheet 5
A student wants to investigate good and bad absorbers of thermal radiation. She has the apparatus
shown in Fig. 5.1, a supply of cold water and a metre rule.
7
15 A block of copper and a block of lead are heated. The internal energy of each block increases by
the same amount.
small polished
small
2 thermometers
electric heater
can has a lower
black-painted
The block of copper
thermal capacity than the block of lead.
can
Which conclusion can be made from this information?
Fig. 5.1
A The temperature increase of the copper is greater than the temperature increase of the lead.
Explain
the student
could of
use
apparatus
has
to carry increase
out her investigation.
B
The how
temperature
increase
thethe
copper
is the she
same
asavailable
the temperature
of the lead.
Describe the results she would expect to obtain. Draw a diagram of the set-up.
C The temperature increase of the copper is less than the temperature increase of the lead.
D
The melting point of copper is lower than the melting point of lead.
16 In a refrigerator, the cooling unit can be fitted either at the top or at the bottom. In an oven, the
heater can be fitted either at the top or at the bottom.
Which row shows the best position for the cooling unit and the best position for the heater?
cooling unit
heater
A
bottom
bottom
B
bottom
top
..........................................................................................................................................................
C
top
bottom
D
top
top
..........................................................................................................................................................
Heat Transfer Practice Questions
..........................................................................................................................................................
1.17 A girl is outdoors. She warms her hands by holding them near a fire, as shown.
..........................................................................................................................................................
hands
..........................................................................................................................................................
fire
..........................................................................................................................................................
..........................................................................................................................................................
......................................................................................................................................................[4]
How does the heat from the fire reach her hands?
A
conduction only
B
convection and conduction
C
convection and radiation
D
radiation only
© UCLES 2018
0625/42/M/J/18
6
[Total: 4]
[Turn over
Prepared by Chermaine Lim (2021)
C
Y
X
copper block
Fig. 4.1
Physics IGCSE (2023)
Y
Y
thermometer B
thermometer
A
02
Thermal
Physics
– Worksheet
5
dull
black
surface
polished
shiny
surface
(i) In Experiment 1, the thermometer bulbs
are both painted
black.
at equal
copper
blockThey are placed
Fig. 4.1
distances from the surfaces of the block. The maximum temperature shown by each
2.16 The diagram
a vacuum
flask
used to keep
hot. painted black. They are placed at equal
is recorded.
(i) thermometer
Inshows
Experiment
1, the
thermometer
bulbsliquid
are both
dull black
surface
polished shiny surface
distances from the surfaces of the
Fig.block.
4.1 The maximum temperature shown by each
block shown by the two
Explain
any difference
between the maximum copper
temperature
thermometer
is recorded.
thermometers.
(i) In Experiment 1, the thermometer bulbs are both painted black. They are placed at equal
distances
from
the surfaces
of the the
block.maximum
The
maximum
temperature
shown by
dull
black
surface
polished
shiny
surfaceshown
Explain
any
difference
between
temperature
byeach
the two
Fig. 4.1
thermometer
is
recorded.
...........................................................................................................................................
thermometers.
vacuum
(i) In Experiment
thedifference
thermometer
bulbsthe
are
both painted
black. They
are placed
equal
Explain 1,
any
between
maximum
temperature
shown
by the attwo
...........................................................................................................................................
...........................................................................................................................................
thermometers.
distances
from the surfaces of the block. The maximum temperature shown by each
Fig. 4.1
thermometer is recorded.
...........................................................................................................................................
...........................................................................................................................................
...........................................................................................................................................
hot liquid
(i) In
Experiment
the thermometer
both painted
black. They
are placed
at equal
Explain
any 1,
difference
betweenbulbs
the are
maximum
temperature
shown
by the
two
...........................................................................................................................................
.......................................................................................................................................[3]
7
distances
from
the
surfaces
of
the
block.
The
maximum
temperature
shown
by
each
...........................................................................................................................................
thermometers.
thermometer is recorded.
...........................................................................................................................................
(ii) In
Experiment
2, the thermometer bulbs are both shiny silver-coloured. They are placed
.......................................................................................................................................[3]
...........................................................................................................................................
at
the same
distances
from
the surfaces
of the blocktemperature
as in Experiment
1. by the two
Explain
any
difference
between
the maximum
shown
.......................................................................................................................................[3]
thermometers.
...........................................................................................................................................
State and explain any differences 8that are observed in the maximum temperatures
How does thermal energy pass through the vacuum?
...........................................................................................................................................
shown
by the thermometers in Experiments 1 and 2.
...........................................................................................................................................
4 A solar panel is mounted on the roof of a house. Fig. 4.1 shows a section through part of the
A
conduction
only
solar2017
panel.
© UCLES
0625/41/M/J/17
...........................................................................................................................................
...........................................................................................................................................
.......................................................................................................................................[3]
B convection only
© UCLES©2017
0625/41/M/J/17
...........................................................................................................................................
UCLES
2017
0625/41/M/J/17
...........................................................................................................................................
sunlight
C radiation
8
.......................................................................................................................................[3]
...........................................................................................................................................
D conduction
and convection
4 A solar panel is mounted on the roof of a house.
Fig. 4.1 shows a section through part of the
8
trapped
solar panel.
...........................................................................................................................................
air
7.4 A solar panel
copper
pipe, through part of the
3.
is mounted on the roof of a house. Fig. 4.1 shows
a section
painted
black
© UCLES
2017
0625/41/M/J/17
solar panel.
.......................................................................................................................................[2]
sunlight
water
glass sheet
(c) Fig. 4.2 shows a firefighter wearing shiny silver-coloured clothing.
sunlight
© UCLES 2017 trapped
0625/41/M/J/17
metal backing sheet,
insulating
air
copper pipe,
painted black
material
trapped
painted black
air
copper pipe,
water
Fig. 4.1
painted
black
glass sheet
© UCLES 2015
0625/12/M/J/15
D
A pump makes water
waterflow through the copper pipes. The water is heated by passing through the
glass
solar panel.
metal sheet
backing sheet,
insulating
painted black
material
Physics IGCSE
(a) Select and explain three
features of the solar panel that maximise
the final
temperature
of
metal backing
sheet,
insulating
Heat
the water.
Fig. 4.1
painted black
material
A pump makes water flow through the copper
Fig. pipes.
4.1 The water is heated by passing through the
solar panel.
makes
flow
through
the of
copper
pipes.
Thethat
water
is heated
passing
throughofthe
a)A pump
Select
and water
explain
three
features
the solar
panel
maximise
the by
final
temperature
the
(a)
and explain three features of the solar panel that maximise the final temperature of
solarSelect
panel.
Prepared by Chermaine Lim (2020)
6
water.
the
water.
Design
Explanation
(a) Select and explain three features of the solar panel that maximise the final temperature of
the water.
9
9
(b) During one day, 250 kg of water is pumped
Fig. 4.2through the solar panel. The temperature of this
°C
to
38
°C.
water
rises
from
16
(b) During one day, 250 kg of water is pumped through the solar panel. The temperature of this
to 38 °C. of wearing shiny silver-coloured clothing.
water
risesbenefit
from 16
State the
to °C
a firefighter
The water absorbs 25 % of the energy incident on the solar panel. The specific heat capacity
°C).
of water
is absorbs
4200 J / (kg
of the energy incident on the solar panel. The specific heat capacity
The
water
25 %
...................................................................................................................................................
of water is 4200 J / (kg °C).
Calculate the energy incident on the solar9panel during that day.
[4]
...............................................................................................................................................[1]
Calculate the energy incident on the solar panel during that day.
Prepared
by Chermaine
Lim
7 through the solar
(b) During one day, 250 kg of water is pumped
panel. The
temperature
of (2021)
this
[Total: 8]
© UCLES 2014
energy
0625/04/SP/16
=
[4]
Physics IGCSE (2023)
(c) The solar panel in Fig. 4.1 is designed to heat water.
02 Thermal Physics – Worksheet 5
(c) The solar panel in Fig. 4.1 is designed to heat water.
A person is deciding whether to install solar panels on her house.
b)
AAperson
personisisdeciding
decidingwhether
whetherto
toinstall
installsolar
solarpanels
panels on
on her
her house.
house.
List
and
explain
three
pieces
of
information
she
needs
to consider in order to make her
© UCLES 2014
0625/04/SP/16
energy
=
[4]
decision.
List and explain three pieces of information she needs to consider in order to make her
decision. Information
Explanation
(c) The solar panel in Fig. 4.1 is designed to heat water.
A person is deciding whether to install solar panels on her house.
List and explain three pieces of information she needs to consider in order to make her
decision.
[4]
[4]
(d) The Sun releases energy as a result of nuclear fusion.
(d) The Sun releases energy as a result of nuclear fusion.
State the meaning of nuclear fusion.
7
State the meaning of nuclear fusion.
(d) The Sun releases energy as a result of nuclear fusion.
Prepared by Chermaine Lim (2020)
[4]
[2]
[2]
[Total: 14]
[Total: 14]
State the meaning of nuclear fusion.
© UCLES 2014
0625/04/SP/16
© UCLES 2014
0625/04/SP/16
[Turn over
[Turn over
[2]
[Total: 14]
© UCLES 2014
0625/04/SP/16
8
[Turn over
Prepared by Chermaine Lim (2021)