Download 1 - Higham St John`s

1.
(a)
(i)
Award ONE mark for both objects unambiguously indicated [in either order]:
1m
 cork;
and
 (plastic) ruler.
(ii)
Award ONE mark for both objects unambiguously indicated [in either order]:
1m
 (iron) nail; and
 (copper) rod.
(b)
Award ONE mark for all five letters sorted correctly:

A
D
1m
B C E
Allow: a correct response naming objects rather than letters:
cork
(plastic) ruler
(iron) nail
(copper) rod
(steel spoon
Do not give credit for a response including
repetition of letters/objects.
(c)
Award ONE mark for a complete circuit diagram showing symbols
[in any order or orientation] for TWO bulbs and ONE cell:
1m
Allow:
 a non-rectilinear circuit:
 use of the obsolete symbol for a bulb:
Do not give credit for:
 extra components;
 circuit diagrams with gaps of more than
2mm between components;
 incorrectly drawn components, eg
2.
1
(a)
Award ONE mark for:
1
bulb
bulb
lights does not
light
steel fork
plastic comb
wooden spoon
aluminium foil
[given]
(b)
Award ONE mark for recognition of an incomplete circuit with reference to switch:
1
 the circuit is not complete;
 switch isn't on/closed;
 switch is off;
 (paper) clip must touch pins.
Do not give credit for:
 they aren't lit by the switch;
 switch isn't working.
(c)
Award ONE mark for a drawn circuit which includes the FOUR symbols
(in any orientation) and which represents Daniel's circuit:
1
Allow:
 non-rectilinear circuits, eg:
 reversed polarity of battery.
Do not give credit for:
 circuits containing symbols not given
in the question;
 extra components;
 circuit diagrams with gaps of more
than 2mm.
[3]
3.
(a)
Award ONE mark for:
 the wire is not connected/joined;
 the wire should touch the battery.
2
1
Give credit for:
 there is a gap;
 there is a break in the circuit;
 there is no electricity/electric current
flowing.
Do not give credit for:
 it is not being used;
 the circuit is wrong.
(b)
Award ONE mark for:
1
 the wires should be connected to each end (of the battery/cell);
 the wires are connected to one end (of the battery/cell).
Give credit for:
 there is no electricity/electric current
flowing.
Do not give credit for:
 the wiring is wrong;
 not connected properly.
(c)
(i)
1
A
B
circuit 1
C
D
circuit 2
E
Give credit for:
 any unambiguous link between circuit
diagrams and correct circuit.
NOTE:
if more than two lines are drawn, deduct
ONE mark for each incorrect line.
Do not award a negative number of marks.
(d)
Award ONE mark for:
 the switch is not closed;
 the paper clip is not touching the drawing pin.
Give credit for:
 there is a gap;
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1
 there is a break in the circuit;
 there is no electricity/electric current
flowing.
Do not give credit for:
 it is not turned on;
 it is not connected;
 it is not being used;
 the circuit is wrong.
[5]
4.
will light
will not light
(a)
1
(b)
1
(c)
1
(d)
1
Do not give credit for a part if both boxes
are ticked.
Accept any mark other than a tick provided
the child’s intention is clear.
[4]
5.
(a)
Award ONE mark for a diagram showing the two cells arranged
positive to negative, with + and – indicated correctly:
1
OR
(b)
Award ONE mark for an understanding that metal conducts electricity (well):
 metal conducts electricity;
 it is a (good) conductor;
 electricity can flow (through metal);
 electricity travels through metal;
 metal can carry/transport electricity.
Allow:
 flexible/springy [because in this context the switch would not work unless the metal
had this property].
Do not give credit for a response that
includes incorrect science:
 metal attracts electricity;
 power flows through [electricity
described inaccurately].
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1
(c)
(i)
Award TWO marks for a complete circuit that includes all three symbols
(in any order or orientation) with two cells.
(ii)
Allow:
 a non-rectilinear circuit.
If you are unable to award two marks, award ONE mark for all three
symbols correctly represented but only ONE cell:
Do not give credit for:
 circuits containing symbols not given in
the question;
 extra components;
 circuit diagrams with gaps of more than
2mm between components;
 incorrectly drawn components, eg
 a circuit with two cells incorrectly
connected.
5
2m
[4]
6.
(a)
Award ONE mark for an awareness that the bulb will light:
1
 the light will go on;
 the bulb will light;
 it will go on;
 it will turn on.
Allow:
 might light up.
(b)
Award ONE mark for recognition of a complete circuit or recognition that
current can flow:
1
 the circuit is complete;
 aluminium/the switch conducts electricity;
 electricity/current can flow through it;
 electricity runs through it/passes through;
 switch connects the circuit;
 it makes a circuit;
 full circuit;
 there is no gap in the circuit;
 the switch conducts electricity.
Do not give credit for:
 the switch is closed [given];
 the two sides touch each other.
(c)
Award ONE mark for a drawn circuit which includes the THREE symbols:
 or non-rectilinear circuits, eg

Allow:
 reversed polarity of battery.
 Switch
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1
Do not give credit for:
 circuits containing symbols not given;
 circuit diagrams with gaps of more
than 2mm;
 extra components;
 incorrectly drawn components, eg
– cell
– lamp
(d)
Award ONE mark for:
1
[4]
7.
(a)
(i), (ii) Award TWO marks for generalisations (consistent with the data) about the
relationship between the two variables of wire length and bulb brightness,
which use TWO comparatives:
2
 the longer the wire, the dimmer the light;
 the shorter the wire, the brighter the light.
Allow (for ONE or TWO marks):
 reference to the distance electricity travels (instead of the length of wire);
 reference to a 'smaller' wire (instead of shorter).
If you are unable to award these TWO marks, use the following requirements
to check if the response should be awarded ONE mark.
Award ONE mark for describing the brightness for only one length of wire:
 when the wire is long, the light is dim;
 when the wire is short, the light is bright.
Do not give credit for:
 reference to electricity being 'used
up'[energy is always conserved];
 reference to speed of travel. 'electricity
takes longer to go further’;
 reference to 'power'.
(b)
Award ONE mark for:
5m
5–15m
25–30m
1
15–25m
40m
[3]
8.
7
(a)
Award ONE mark for an identification of a fault in the
electrical circuit:
1
 both wires are attached to the + terminal/one side/end/part of the battery;
 it is not a complete circuit.
Allow:
 one wire should be attached to each end (of the battery).
Do not give credit for:
 it is connected wrongly [imprecise].
(b)
Award ONE mark for a drawn circuit which includes all three
symbols as given in the question (in any order):
1
M
Allow:
[non-rectilinear circuits]
M
M
[parallel circuits, although this is beyond Key Stage 2]
(c)
Award ONE mark for:
A
(d)
B
1
C
Award ONE mark for an awareness of the insulating property
of plastic:
1
 plastic (it) does not conduct electricity;
 it is an insulator/not a conductor;
 electricity will not pass/go/travel through plastic
Do not give credit for:
 so you do not get a shock
[given in question].
(e)
Award ONE mark for:
 the water might conduct electricity to the body*;
 you might get a shock;
 you could be electrocuted.
Allow:
 there would be a short circuit.
NOTE:
Water is not a good conductor of electricity but it is a better conductor than air.
Do not give credit for:
8
1
 Water and electricity do not mix;
 You could die;
 it is dangerous [given in question].
[5]
9.
(a)
(i)
Award ONE mark for recognising that electricity does not travel
through plastic:
The bulb has not lit because the plastic spoon...
1
 is an insulator;
 is not a (good) conductor (of electricity);
 stops the electricity flowing;
 does not let electricity through.
ONE mark may be awarded for a response
suggesting that the circuit would work if
the spoon were metal:
The bulb has not lit because the plastic
spoon...
 is not metal.
Do not give credit for an insufficient
response:
 is plastic [given];
 stops it going through [ambiguous as to
what ‘it’ refers to].
(ii)
Award ONE mark for recognising the switch is open causing a break in
the circuit:
The bulb has not lit because...
1
 the switch is open/not closed/off;
 there is a gap/break in the circuit;
 the circuit is incomplete.
ONE mark may be awarded for:
The bulb has not lit because...
 the clip is not attached to the pin;
 the switch is not connected.
Do not give credit for an insufficient
response describing the equipment as faulty:
 the switch is not right.
Do not give credit for an insufficient
response:
 it is not connected/joined(properly).
(iii)
Award ONE mark for recognising that (the terminals on) one of the
cells is the wrong way round:
The bulb has not lit because...
 one of the cells is the wrong way round;
 the two positives are together.
ONE mark may be awarded for:
The bulb has not lit because...
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1
 the cells are the wrong way round;
 the batteries are pointing different ways;
 the batteries are pointing toward each
other.
Do not give credit for an insufficient
response that refers to poles on the cell:
 the same poles are facing each other
[indicates that electricity is being confused
with magnetism].
Do not give credit for an insufficient
response:
 the batteries are not connected correctly;
 the equipment is faulty;
 the cells are facing/pointing the same
way.
(b)
Award ONE mark for a complete circuit with the symbols correctly drawn
[in any order]:
1
ONE mark may be awarded for a
non-rectilinear circuit:
Do not give credit for a response that
includes incorrect science:
 circuits containing symbols not given
or gaps between components of more than
2mm;
 circuits with extra/fewer components;
 terminals on the cells facing each other;
 circuits with incorrectly drawn
components, eg:
(c)
Award TWO marks for giving any two of the following:
 add more batteries;
 use cells with a higher voltage;
 use shorter wires;
 make two separate circuits with two
batteries in each.
Give credit for a correct response that
goes beyond the key stage 2 programme
of study indicating that wires of less
resistance or a parallel circuit could
10
2
be used:
 use thicker wires;
 use wires of less resistance;
 put the bulbs in a parallel circuit.
or
If you are unable to award two marks, award ONE mark for giving one
correct response.
Marks may be awarded for:
 add another/an extra cell;
 use stronger/more powerful/new
batteries;
 re-charge the cells;
 make the circuit smaller/shorter.
Do not give credit for an insufficient
response indicating that a bulb may become
brighter if the other one is removed:
 take one bulb away;
 have only one bulb.
Do not give credit for an insufficient
response:
 use a bigger/different cell [does not
indicate an increase in voltage];
 use two cells;
1
 use a new bulb [both existing bulbs
must be brighter];
 use different wires/change the wires;
 use smaller wires [is ambiguous as to
whether this is shorter or thinner, the latter
of which is incorrect];
 use fewer/less wires [each wire could
be longer].
Do not give credit for a second response that
is a restatement or repetition of the first.
[6]
10.
(a)
Award ONE mark for:
1
 conductors.
Do not give credit for a response that
includes incorrect science:
 thermal conductor.
(b)
Award TWO marks for identifying all three insulators:
 sticky tape
 plasticine
 newspaper
or
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2
(c)
If you are unable to award two marks, award ONE mark for correctly
identifying any two insulators.
1
Award ONE mark for:
1

(d)
Award ONE mark for correctly labelling all three symbols:
bulb
cell
1
buzzer
Allow:
 battery [in place of ‘cell’].
(e)
Award ONE mark for an indication of an increase in voltage or
that the bulb could be removed from the circuit:
1
 add a cell/battery;
 use a cell with a higher voltage;
 take the bulb out of the circuit;
 have two/more cells in the circuit.
Allow:
 use a stronger cell;
 put another cell in;
 recharge the battery;
 use a new cell;
 use a more powerful battery;
 make the circuit/wire shorter/smaller.

Give credit for a correct response that goes beyond the key stage 2 programme of study:
 use thicker wire;
 use less wire.
Do not give credit for an insufficient
response:
 use a bigger cell [does not indicate an
increase in voltage];
 make a parallel circuit;
 change the position of the buzzer in the
circuit;
 remove the bulb [does not refer to the
circuit].
[7]
11.
12
(a)
(i)
Award ONE mark for:
1

(ii)
circuit 2
Award ONE mark for an indication that this circuit has the least
components in it (to the power supply) or that it has the least number
of components compared to the other circuits:
1
 all the other circuits have more components/things;
 there are fewer components/things (compared to the number of cells).
Allow:
 the battery/cell has to power only one component/bulb/thing;
 the bulb does not have to share the electricity from the battery;
 there is more electricity for each component;
 there is just/only one bulb in the circuit.
Do not give credit for an ambiguous
response:
 there is one bulb in the circuit
[circuit 3 also has one bulb].
(b)
Award ONE mark for:

(c)
1
M
Award ONE mark for indicating that the bulbs will be brighter:
1
The bulbs will...
 get brighter.
Allow:
The bulbs will...
 get lighter;
 blow.
Allow:
 an absolute response:
The bulbs will...
 be bright.
Do not give credit for an insufficient
response:
The bulbs will...
 light (up).
(d)
Award ONE mark for all three circuits correctly identified:
–
C
circuit ......
–
–
A
circuit ......
–
1
–
B
circuit ......
[5]
13
12.
(a)
Award ONE mark for an understanding that the towelling is absorbent:
1
 it soaks up the water;
 it absorbs water (well).
Allow:
 it takes in water.
Do not give credit for an insufficient
response:
 it is soft;
 it is like a sponge [does not describe the
appropriate property];
 it is flexible.
Do not give credit for a response that
includes incorrect science:
 it sucks up water.
(b)
Award ONE mark for:
1
 are waterproof.
(c)
Award ONE mark for:
1
 condensation;
 condensing.
Do not give credit for a response that
includes incorrect science referring to the
water droplets as steam:
 the water is steam on the window;
 steam.
Do not give credit for an insufficient
response:
 cooling [the water can cool but may not
necessarily condense];
 liquidise [water liquidises on melting].
(d)
Award ONE mark for an indication that the water (vapour) is in the air:
1
 water in the air.
Allow:
 water in the atmosphere.
Do not give credit for an insufficient
response:
 evaporation/water vapour [does not say
where the water is];
 the room.
(e)
Award ONE mark for an awareness of the dangers caused by water
conducting electricity:
 you might get an electric shock;
14
1
 because water can conduct electricity.
Allow:
 it might short circuit;
 you might be killed;
 it will explode.
Do not give credit for an insufficient
response:
 it might get wet;
 it is not safe;
[repetition of stem];
 electricity and water do not mix [does not
explain the danger];
 it could cause a fire;
 sparks will fly.
[5]
13.
(a)
(i),(ii)
Award TWO marks for any two specific reasons giving
possible faults with the following components:
2
Bulb
 the bulb is faulty/blown;
 the bulb is not screwed in properly.
Switch
 the switch is faulty/broken.
Cell
 the battery is flat/dead/gone.
Wires
 the wires are broken/faulty.
Do not give credit for a second cause that is
a repetition or restatement of the first.
Do not give credit for an insufficient
response:
 the switch is open [given that they close
it];
 the battery is old [does not imply it has
discharged];
 the wires are not connected properly
[given that they are];
 the bulb is not working [given; not clear
whether this is an explanation or
observation].
OR
If you are unable to award two marks award ONE
mark for any one specific reason.
Do not award a second mark for a general
reason given with a specific reason [the
15
1
specific reason elaborates on the general
reason].
or
Allow:
ONE mark for a general reason relating to the circuit as a whole;
 there is a break in the circuit;
 the circuit is not complete.
(b)
Award ONE mark for:
1
 conductors.
Allow:
a response that indicates understanding of conduction:
 conductive.
Do not give credit for:
 metals [given].
(c)
Award ONE mark for all three rows correctly ticked:
Wire
Must be the
same
1
Must be
different
Type of metal
Length
Thickness
(d)
Award ONE mark for an indication of an increase in voltage:
 add a cell/battery;
 use a more powerful battery.
Allow:
 use a stronger cell;
 put another cell in;
 recharge the battery;
 use a new cell.
Do not give credit for an insufficient
response:
 change the battery;
 use a bigger cell;
[these do not indicate an increase in
voltage];
 change the bulb [indicated that the same
bulb is used];
 close the switch [given];
 use a thicker/shorter/different type of wire
[given].
Give credit for a response that goes beyond the key stage 2
programme of study.
 use a cell with a higher voltage.
[5]
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