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8/10/2019 Checkpoint SAINS Paper 1
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1 Different ellshave
different
uncticns.
Drawa
line
between aclr
picture
of a
cel larrd ts unction.
NOT TO
SCALE
picture
w
2'\)
r-
\
0
I
p
., 1
Y
@::"-
k
ffi
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ct
C.li
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9,
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ci
el.
c,f
citcilt
ct
c{]
c"
c.t
cu
g
t3l
carries
electrical
messages
absorbs
ater
rom
he
soil
swims o egg
cell
contains hloroplasts
or
photosynthesis
carriesoxygen n the
blood
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2 The
nternal
tructure
f
the Earth
s
made
of different avers
Lookat the
diagram
f the
Earth.
NOTTO
SCALE
On
he
diagram,abel
arts
,
B,
C andD.
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3
Lookat
the diagram.
t shows
howwhite
ight
an be spl i t nto
different olours
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ray
of
white ight
(a)
What s
the name
of the
process
n which
white ight s
spl i t nto
different olours?
Tick
r;the
correct
ox.
absorption
diffraction
dispersion
reflection
(b)
What
s the name
or
he
glass
block
shown n the diagram?
(c)
Complete
he
sentence
hathelps
o
explain he different
aths
of red ight
andviolet
ight.
Violet
ight ravels t a
..
speed
within
he
glass
block
han
the red ight.
(d)
Only
wo
ight
ays
are shown.
S is
he
path
of
red
ight.
T is the
path
of violet
ight.
Draw,on the diagram,
he
path
of a ray
of
green
ight.
n
T
T
n
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4 Look
at the
graph.
oercentaqe
that
play
e"nnis
15
(a)
(i)
Describe wo
patterns
n the data.
1 .
It shows he
percentages
f boysand
girls
between
he ages
of
'11
and
15 who
play
ennis
as
their
main orm
of
exercise.
10
13
age
,
'
.
,
( i i )
Calculate he
difference n
percentage
etween
15
year
old boys that
play
tennis
and
15
year
old
girls
hat
play
ennis.
(i i i )
Calculatehe
percentage
f
13
year
old
boys
hatdo not
play
ennis.
%
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Exercise
s
importantor fitnessand
health.
Describe ne other actor hat s importantor
fitnessand
health.
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12)
(b)
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5
Read he nformation
n
the
boxabout
ndigestionablets.
Acids
n the
stomach an
cause ndigestion.
Indigestionablets
an
get
rid
of
the acid.
(a)
Complete he sentences.
Choose
words
rom he list.
absorb
neutral ise
acidic
sa l t
a lka l ine
suga r
Indigestionablets
the acid n he stomach
becausendigestionablets
re
Indigestion
ablets eactwith
he acid
o form
water
and a
(b)
Tom investigates
wo
differentndigestion
ablets.
He wants
o
find
he best ndigestion
ablet.
He adds3
dropsof Universal
ndicator
olutiono 50cm3of acid.
Tom adds
one
indigestion
ablet nd stirs
he
solution.
He
repeats
his
or
he
other
ndigestion
ablet.
( i)
How
doesTomdecidewhich
ablet
ets
idof most
acid?
t3l
I3l
(
i )
Tom epeats
heexperiment
itha
third
ablet.
Write
own nevariable
e should eeo hesame.
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6
The diagram
hows he
lowers f
a water
i ly.
r-"ri
The flower
attracts
mall
beetles,whichcrawl nside.
(a) (i)
Suggest
why beetlesare
attracted o water
ily lowers.
(i i )
Suggest
why he
presence
f beetles
s mportant
o
the water
i ly
plants.
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.
(b) The male
parts
of the
flower
produce
ex cells.
( i)
What
name s
given
o the
male
parts
of
a
flower?
(ii)
What s the
name of the
grains
produced
by
the
male
parts
of the
flower hat contain
he
malesex cel ls?
(i i i )
Which
worddescribes
he
oining
f a
malesex
cell
witha female
ex cel l?
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7 Marcel
ndArmansiton a seesaw.
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(a)
Marcel
lp ivot
The seesaw
alances.
(i)
Calculate
he
moment
ausedby
Marcel.
Answer
(i i)
Calculate
hemoment aused yArman.
Answer
Armanmoves
loser o the
oivot.
Describe hat
happens.
Nm
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Nm
t1l
(b)
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(c)
Marcel nd
Armanchange
places.
ffi
Arman
Tick
(z;the
boxesnext o
the two correctstatements.
The
seesaw alances.
The seesaw
oes
not balance nd moves n a clockwise irection.
The seesaw oes
not
balance
nd
moves n an anti-clockwiseirection.
Marceland Armanhave he
same
orce.
Marcel as
a
larger orce
hanArman.
Marcel asa smaller orce hanArman.
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T
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tr
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I
(a)
Sancha inds nformation
boutenergy
sources
rom
he Internet
ffig
c;
C=
cg
c=
(u>
CF
c=
CH
rE -
: 3
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91.
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Here s her nformation.
energy
source
percentage
f electricity
generated
singsource
coal
24
gas
and oi l
26
nuclear
30
renewable
20
What s he bestway or Sanchao
present
er
nformation?
Circle
our
answer.
frequency
diagram
l ine
graph
pie
chart
table
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(b)
Friedrik
measures
he current
hrough
omeelectrical
omponents.
component
Here rehis esults.
What s the bestway for Friedrik
o
present
his
results?
Circle
our
answer.
bar chart
l ine
graph
pie
chart table
l1 l
ffi{
component
current
n
amps
resistor
1
lamp 4
wtre
10
electromaonet
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I Chemical
ymbols
are used
o represent tomsof
elements
Chemical ymbols re used
n
chemical
ormulae.
Look
at the listof formulae.
Co
NaNOr
Si
SOz
An element as
he chemical ymbol
Si.
What s the name
of thiselement?
(b)
Choose rom he ist he ormula
f another lement.
(c)
NaNO3s the ormula or
a compound.
(i)
Explain ow
you
can el l t s a compoundrom
ts
ormula.
12
cl
Cz
cg
cg
Q a
c-
c4
CH
cg
C;
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9t
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c
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et
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gi
et
cl
c.*
Att
c.t
cl
c,l
ct
oll
cl
cl
cl
c l
c l
c l
c l
Oz
co
t1l
t1l
t1l
( i i )
Choose
rom
he ist he ormula or
one othercompound.
(d)
A compound as
he
ormula
CaCOs.
State he number
of different lements n
CaCO3.
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10
Look
at
the diagram
f
a human
body.
13
(a)
Write he
namesof
parts
X
and
Y in the
spaces.
Choose
words rom he
list.
large ptestine
smal l n test ine
tffi
l iver
stomach
lung
heart
(b)
The digestive ystem
contains hemicals hat break
down
ood.
What
are
hesechemicals al led?
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11
Nadiahas our
ods,
A, B,
C and
D.
Each
rod s
made
of a
differentmaterial.
She ries o electrically
harge
each
rod.
Nadia
brings od A
and rod
B
close
ogether.
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rod A-
They
attract achother.
Nadia rings ther ombinationsf
rods
loseogether.
Hereareher
esults.
rods
force
AandB
attract
BandC
no force
AandC no force
BandD
repel
AandD
attract
(a) Describe owNadia an ry o electricall yharge peach od.
rod B
(b)
Nadia nows od
D
hasa negativeharge.
(i)
What s
heelectric harge n
rodA?
(ii)
What
s
heelectric harge n rodB?
(iii) What s heelectric harge n rodC?
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