Year%8%Science% Revision%Pack% May/June2012%
Year
8
Science
Revision
Pack
May/June
2012
This
revision
pack
is
designed
to
help
you
prepare
for
your
science
exam.
By
completing
all
the
work
you
will
be
able
to
see
where
you
have
learned
everything
and
where
you
need
to
do
extra
revision.
All
the
subjects
in
this
pack
have
been
studied
in
class
and
should
be
accessible
to
most
students.
Different
tasks
are
set
at
a
range
of
levels
so
you
can
get
an
idea
what
level
you
are
capable
of
and
where
you
need
to
work
harder.
Additional
work
is
also
available
on
SAM
Learning
online.
I
also
recommend
using
BBC
Bitesize
to
help
you
revise.
Remember
?
revision
needs
to
be
ACTIVE
?
you
should
be
doing
something.
Nobody
learns
well
by
just
sitting
down
and
reading,
but
nobody
learns
by
just
clicking
away
randomly
on
the
computer.
Keep
paper
handy
so
you
can
write
down
questions
to
ask
your
teacher.
Quiz
your
friends
about
the
revision
work
in
school.
Try
to
explain
your
ideas
to
your
parents!
What
is
most
important
is
that
you
read
the
question
carefully
before
you
answer
it
sometimes
you
can
say
something
true
but
get
no
marks
if
it
doesn't
answer
the
question!
Good
luck,
B.
Crossley,
KS3
Co--ordinator,
Science.
Task 1: Get the words right! (Levels 5?6)
Use straight lines or, alternatively, colour coding to match up the words with their correct meaning.
Word Pathogen
Meaning When the microbe/germ enters your body.
Incubation period
The signs of the illness.
Infection Symptom Toxin
A microbe that causes a disease.
Poisons that pathogens release into your body and cells. The period of time between becoming infected and showing symptoms.
Task 2: Dissolving (Levels 3?4)
solvent ? solution ? solute ? insoluble ? soluble ? dissolving solid ? liquid ? dissolved
Use the words in the box above to complete this paragraph.
When we put sugar into tea it disappears! We can taste it but we can't see it, we say it has _____________. For _____________ to take place we need a _____________, which is generally a liquid, and a _____________, which is generally a solid. If the _____________ particles will not dissolve in the liquid then we say it is _____________. If the solid particles do dissolve in the _____________ we say it is _____________. Once a solid has dissolved in a liquid we say we have a _____________.
Now use as many of the words as you can in a paragraph of your own to describe an everyday example of dissolving.
Task 3: How big and how far? (Levels 5?6)
Planet
Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
Distance Length of from Sun year (Earth (million km) days)
69.7
88
109
225
152
365
249
687
816
4380
1510
10 768
3010
30 660
4540
60 225
Surface temp (?C)
Mass (? Earth's mass)
?185 430 0.06
480
0.82
?89 58 1
?110 0 0.11
?150
318
?170
95
?200
14.5
?210
17.2
Gravity (? Earth's gravity) 0.38 0.9 1 0.38 2.7 1.2 0.93 1.2
1 Plot a graph showing the distance of a planet from the Sun against its length of year. 2 What does your graph show?
.................................................................................................................................... ....................................................................................................................................
3 Now plot a graph of distance from the Sun against temperature. What does this graph show?
.................................................................................................................................... .................................................................................................................................... 4 Can you explain these relationships?
.................................................................................................................................... .................................................................................................................................... .................................................................................................................................... ....................................................................................................................................
Task 4: Adapted to survive! (Levels 3?6)
1 Look at the following three animals.
a
b
c
For each one, write down two ways in which it is adapted to be a predator. a .....................................................................................................................................
..................................................................................................................................... b .....................................................................................................................................
..................................................................................................................................... c .....................................................................................................................................
.....................................................................................................................................
2 Choose one of these animals and describe what its adaptations are for: a Finding its food (its prey)
.................................................................................................................................... b Catching its food
.................................................................................................................................... c Killing its food
....................................................................................................................................
....................................................................................................................................
3 Here is a picture of wolf's skull. The wolf is a predator.
Complete the table below by writing down how the teeth help the wolf to be a predator.
Type of tooth Incisor
What the tooth does
Canine
Molar
Task 5: Match the elements and the symbols (Levels 3?4)
1 Use the Periodic Table to find the names of these elements.
a Cr bC cP d Ca eV
f Be gI h Hg iK j Ag
2 Now use the Periodic Table below to find the symbols for these elements.
a cobalt b titanium c magnesium d copper e aluminium
f oxygen g nitrogen h tungsten i gold j sodium
................
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