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Cel
ls –
th
e B
uild
ing
B
lock
s o
f Lif
e C
ells
– t
he
Bu
ildin
g
Blo
cks
of L
ife
Eati
ng
, Dri
nk
ing
an
d
Bre
ath
ing
Ea
tin
g, D
rin
kin
g a
nd
B
reat
hin
g
Get
tin
g t
he
Ener
gy
you
r B
od
y N
eed
s
Name the three
cell structures that are found
in plant cells, but not in
animal cells.
What is gestation?
Give three ways in which
alveoli are adapted for gas
exchange.
Describe what happens to
someone when they suffer
from an asthma attack.
What is meant by the term
antagonistic pair?
1
2
3
4
5
Cel
ls –
th
e B
uild
ing
B
lock
s o
f Lif
e C
ells
– t
he
Bu
ildin
g
Blo
cks
of L
ife
Eati
ng
, Dri
nk
ing
an
d
Bre
ath
ing
Ea
tin
g, D
rin
kin
g a
nd
B
reat
hin
g
Get
tin
g t
he
Ener
gy
you
r B
od
y N
eed
s
1
2
3
4
5
The vacuole, cell wall and
chloroplast are three cell
structures found in plant cells,
but not animal cells.
Gestation is the process of
the embryo developing in
the uterus.
Alveoli are adapted for gas
exchange by having:
• thin, moist walls
• a good blood supply
• a large surface area.
When someone has an asthma
attack the bronchioles narrow,
which reduces the space for
air to enter. Less air inside
the lungs means less oxygen
is absorbed into the blood,
leaving the sufferer gasping
for breath.
An antagonistic pair is when
one muscle contracts and the
other relaxes.
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
chloroplastvacuole
cell wall
Get
tin
g t
he
Ener
gy
you
r B
od
y N
eed
s
Loo
kin
g a
t P
lan
ts a
nd
Ec
osy
stem
s Lo
ok
ing
at
Pla
nts
an
d
Eco
syst
ems
Var
iati
on
for
Surv
ival
V
aria
tio
n fo
r Su
rviv
al
What is the word equation
for aerobic respiration?
What is needed for
photosynthesis to take place?
What does the term
bioaccumulation mean?
Name the scientists who
deduced and then published
the structure of DNA in 1952.
Explain the purpose of a
gene bank.
6
7
8
9
10
Get
tin
g t
he
Ener
gy
you
r B
od
y N
eed
s
Loo
kin
g a
t P
lan
ts a
nd
Ec
osy
stem
s Lo
ok
ing
at
Pla
nts
an
d
Eco
syst
ems
Var
iati
on
for
Surv
ival
V
aria
tio
n fo
r Su
rviv
al
6
7
8
9
10
The word equation for
aerobic respiration is:
Carbon dioxide, water, light
and chlorophyll are needed for
photosynthesis to take place.
Bioaccumulation describes the
build-up of toxic materials in
the organisms that are at the
top of the food chain.
The scientists who deduced the
structure of DNA were James
Watson and Francis Crick.
A gene bank stores seeds and
cells from as many organisms
as possible. This is to ensure
that no genes are lost due
to extinction. The genes may
be helpful in the future to
provide medicines or food.
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KS3 Revision • Science
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glucose + oxygen carbon dioxide
+ water + energy
Var
iati
on
for
Surv
ival
O
ur
Hea
lth
an
d t
he
Effe
cts
of D
rug
s
Ou
r H
ealt
h a
nd
th
e Ef
fect
s o
f Dru
gs
M
ixin
g, D
isso
lvin
g a
nd
Se
par
atin
gM
ixin
g, D
isso
lvin
g a
nd
Se
par
atin
gIf an adult body
cell of a wolf contains 78
chromosomes, how many
chromosomes will be in a
wolf’s sperm cell?
What are the three different
types of microbes that can
cause disease?
Drugs can be divided into
four main groups. What are
these groups?
What is meant when a
chemist says that a substance
is pure?
What is the law of
conservation of mass?
11
12
13
14
15
Var
iati
on
for
Surv
ival
O
ur
Hea
lth
an
d t
he
Effe
cts
of D
rug
s
Ou
r H
ealt
h a
nd
th
e Ef
fect
s o
f Dru
gs
M
ixin
g, D
isso
lvin
g a
nd
Se
par
atin
gM
ixin
g, D
isso
lvin
g a
nd
Se
par
atin
g
11
12
13
14
15
The number of chromosomes in
a wolf’s sperm cell will be 39.
Adult body cells have two pairs
of every chromosome, so
78 ÷ 2 = 39
The three different types
of microbes that can cause
disease are:
• bacteria
• viruses
• fungi.
The four main groups of
drugs are:
• painkillers
• depressants
• stimulants
• hallucinogens.
A substance is pure when it
only contains one type of
atom or compound.
The law of conservation
of mass states that in any
physical change or chemical
reaction, the mass after the
change will be the same as
the mass before the change.
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
Elem
ents
, Co
mp
ou
nd
s an
d R
eact
ion
sEl
emen
ts, C
om
po
un
ds
and
Rea
ctio
ns
Exp
lain
ing
Ph
ysic
al
Ch
ang
esEx
pla
inin
g C
hem
ical
C
han
ges
Exp
lain
ing
Ch
emic
al
Ch
ang
es
In a reaction, magnesium
reacts with oxygen to form
what compound?
How many atoms are in
a molecule of maltose,
C12H22O11?
What name is given to a
reaction that produces heat
energy?
When a
hydrocarbon fuel is burned
in excess oxygen, what gas is
produced as a product?
What products are formed
when an acid reacts with
a metal?
16
17
18
19
20
Elem
ents
, Co
mp
ou
nd
s an
d R
eact
ion
sEl
emen
ts, C
om
po
un
ds
and
Rea
ctio
ns
Exp
lain
ing
Ph
ysic
al
Ch
ang
esEx
pla
inin
g C
hem
ical
C
han
ges
Exp
lain
ing
Ch
emic
al
Ch
ang
es
16
17
18
19
20
The compound formed in the
reaction between magnesium
and oxygen is magnesium
oxide.
There are 45 atoms in a
molecule of maltose.
(12 × C) + (22 × H) + (11 × O)
A reaction that produces
heat energy is called an
exothermic reaction.
When a hydrocarbon fuel is
burned in the presence of
excess oxygen, carbon dioxide
gas is produced.
The products salt and
hydrogen are formed when
an acid reacts with a metal.
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
Ob
tain
ing
Use
ful
Mat
eria
lsO
bta
inin
g U
sefu
l M
ater
ials
Ob
tain
ing
Use
ful
Mat
eria
lsU
sin
g o
ur
Eart
h
Sust
ain
ably
Usi
ng
ou
r Ea
rth
Su
stai
nab
ly
What happens in a
displacement reaction?
What is the chemical reason
why carbon displaces iron
from its ore?
In pottery, what has to
happen to clay in order to
make a ceramic?
What are the three main
rock types?
According to
scientists, what is the main
cause of the increased carbon
dioxide levels on our planet
today?
21
22
23
24
25
Ob
tain
ing
Use
ful
Mat
eria
lsO
bta
inin
g U
sefu
l M
ater
ials
Ob
tain
ing
Use
ful
Mat
eria
lsU
sin
g o
ur
Eart
h
Sust
ain
ably
Usi
ng
ou
r Ea
rth
Su
stai
nab
ly
21
22
23
24
25
In a displacement reaction the
metal that is in a compound
is displaced by another metal
that is higher up in the
reactivity series.
Iron is lower in the reactivity
series than carbon, so carbon
displaces it.
A ceramic is made by
heating the clay at a high
temperature in an oven / kiln.
The three main rock types are:
• igneous
• sedimentary
• metamorphic.
The increased carbon dioxide
levels are due to human
activity, mainly burning fossil
fuels.
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
Usi
ng
ou
r Ea
rth
Su
stai
nab
lyFo
rces
an
d t
hei
r Ef
fect
sFo
rces
an
d t
hei
r Ef
fect
sFo
rces
an
d t
hei
r Ef
fect
sFo
rces
an
d t
hei
r Ef
fect
s
Explain why carbon dioxide
causes climate change.
For an object to
speed up or slow down, what
has to happen to the forces
acting on that object?
A boy weighing
80 N is sitting at the
end of a seesaw, 2 m from the
pivot. What is the moment?
How does Hooke’s Law apply
to a spring?
What is the formula used to
calculate speed?
26
27
28
29
30
Usi
ng
ou
r Ea
rth
Su
stai
nab
lyFo
rces
an
d t
hei
r Ef
fect
sFo
rces
an
d t
hei
r Ef
fect
sFo
rces
an
d t
hei
r Ef
fect
sFo
rces
an
d t
hei
r Ef
fect
s
26
27
28
29
30
Carbon dioxide causes
climate change because it
is a greenhouse gas. The
more carbon dioxide, the
more energy from the
sun is trapped. This causes
temperatures to rise and
unpredictable changes
to weather patterns.
The forces on the object
must become unbalanced. If
the forward force is greater,
the object will speed up. If
the force in the opposite
direction to movement is
greater, then the object
will slow down.
The moment is 160 Nm.
Moment = Force × Distance from pivot
Hooke’s Law states that the
stretch of the spring will be
directly proportional to the
force applied to it.
Speed = Distance
Time
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
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ts
d
Forc
es a
nd
th
eir
Effe
cts
Exp
lori
ng
Co
nta
ct a
nd
N
on
-Co
nta
ct F
orc
esEx
plo
rin
g C
on
tact
an
d
No
n-C
on
tact
Fo
rces
Exp
lori
ng
Co
nta
ct a
nd
N
on
-Co
nta
ct F
orc
esM
oti
on
on
Ear
th a
nd
in
Sp
ace
In physics, what is meant by
the term work?
What would happen if two
magnets with the same poles
were brought together?
What is the formula for pressure?
What is the formula for weight?
Why are shadows
of objects longer at noon in
winter in Northern latitudes?
31
32
33
34
35
Forc
es a
nd
th
eir
Effe
cts
Exp
lori
ng
Co
nta
ct a
nd
N
on
-Co
nta
ct F
orc
esEx
plo
rin
g C
on
tact
an
d
No
n-C
on
tact
Fo
rces
Exp
lori
ng
Co
nta
ct a
nd
N
on
-Co
nta
ct F
orc
esM
oti
on
on
Ear
th a
nd
in
Sp
ace
31
32
33
34
35
Work is only done when a
force has acted on an object
and that object has changed.
The poles are the same, so
the magnets would repel.
Pressure = Force
Area
Weight = Mass × Gravitational Field Strength
Shadows are longer at
noon in winter in Northern
latitudes because the sun
appears lower in the sky, so
the light shines on the object
from a smaller angle.
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
AP
F
gm
W
Ener
gy
Tran
sfer
s an
d
Sou
nd
Mag
net
ism
an
d
Elec
tric
ity
Mag
net
ism
an
d
Elec
tric
ity
Mag
net
ism
an
d
Elec
tric
ity
Wav
es a
nd
En
erg
y Tr
ansf
er
What do we mean when
we say that a wave has a
frequency?
What makes a parallel circuit
different to a series circuit?
What is the formula for
resistance?
Give three ways in which an
electromagnet can be made
more powerful.
State the Law of Reflection.
36
37
38
39
40
Ener
gy
Tran
sfer
s an
d
Sou
nd
Mag
net
ism
an
d
Elec
tric
ity
Mag
net
ism
an
d
Elec
tric
ity
Mag
net
ism
an
d
Elec
tric
ity
Wav
es a
nd
En
erg
y Tr
ansf
er
36
37
38
39
40
The frequency of a wave is
the number of waves per
second, measured in Hz.
A parallel circuit has branches
through which the current
is divided, whereas a series
circuit has only one route for
the current to flow.
Resistance = Voltage
Current
An electromagnet can be
made more powerful by:
• increasing the number of
coils in the wire
• increasing the current
• adding a core made from
a magnetic material, e.g.
iron.
The Law of Reflection is:
The angle of incidence
= The angle of reflection
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
KS3 Revision • Science
RI
V