1.1 INTRODUCTION TO SCIENCE
1. i) Name the following apparatus with the word given.
Retort stand
a..
Measuring cylinder
b.
Bunsen burner
c.
Conical flask
d.
ii)
Burette
Round bottomed flask
Test tube
f.
g.
e.
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Gas jar
h.
iii)
External calipers
i.
Pipette
Burette
j.
Internal calipers
l.
k.
iv)
Filter funnel
m.
Stop watch
n..
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Spring balance
Level balance
o.
p.
v)
Stethoscope
Opisometer
q.
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r.
Thermometer
s..
Hand lens
t.
b) Draw lines to show the correct match between the apparatus and their
functions
Name the apparatus
1.Beaker
2.Measuring cylinder
Function
A. To measure the weight of an
object
B. To measure the volume of a
liquid
3.Gas jar
C. To contain liquid and chemicals
4.Spring balance
D. To measure temperature
5.Thermometer
6.Pipette
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E. To collect gases
F. To measure fixed volume of
liquid
2. Give the function of apparatus below.
i) Pipette:
…………………………………………………………………………………..
…………………………………………………………………………………...
ii) Thermometer:
…………………………………………………………………………………..
…………………………………………………………………………………..
iii) Measuring cylinder :
…………………………………………………………………………………..
…………………………………………………………………………………...
iv) Gas jar
…………………………………………………………………………………..
…………………………………………………………………………………..
v) Spring balance
…………………………………………………………………………………..
…………………………………………………………………………………...
vi) Thermometer:
…………………………………………………………………………………..
…………………………………………………………………………………..
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3. Name the apparatus below.
i)
ii)
iii)
iv)
v)
vi)
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4. Diagram 4 shows a thermometer.
a) What is the reading of the thermometer?
……………………………………………
b) Name liquid P
P: …………………………..
40
30
P
c) Put a ( / ) in the correct box on the figure to show the correct eye when taking a
reading?
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1.2 CELL AS THE BASIC UNIT OF LIFE
1.Name the parts of microscope.
P
Q
T
R
S
U
V
W
a) Draw lines to show the correct match between the part of the microscope and
its function.
PART
FUNCTION
P
1.Hold the objective lenses
Q
2.Regulates the amount of light reaching the
objective lens
R
3.Holds the eye piece
S
4.The lens that magnifies the specimen
T
uestion
5.Reflects light into the microscope
U
6.Platform where the slide is placed
V
7.Control the height of the microscope tube
with more accurately
8.Control the height of the microscope tube
for focusing
W
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Questions
2. (i) What is the function of eyepiece?
…………………………………………………………………………………….
(ii) What is the function of stage?
…………………………………………………………………………………… .
(iii) What is the function of mirror?
…………………………………………………………………………………… .
(iv) What is the function of objective lens?
…………………………………………………………………………………… .
(v). What is the function of coarse focus knob?
……………………………………………………………………………………
(vi). What is the function of fine focus knob?
……………………………………………………………………………………
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Cell as a unit of life
3. Diagram 3 shows an animal cell.
P
Q
R
Diagram 3
Label each part of the cell with a suitable word from the following list.
Nucleus
Cell membrane
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Cytoplasm
4. Diagram 4 shows a plant cell
D
A
E
B
F
C
Diagram 4
Label each part of the cell with a suitable word from the following list.
Cell membrane
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Cytoplasm
Chloroplast
Nucleus
Vacuole
cell wall
5 Diagram 5 shows the structure of a cell.
S
T
P
Q
U
R
Diagram 5
Match the labeled cell structures to their names and functions.
Cell structure
Name
P
Nucleus
Maintains the shape of cell
Q
Cell membrane
Controls all cell activities
R
Cytoplasm
Absorb sunlight for
photosynthesis
S
Chloroplast
Stores water and
dissolved minerals
T
Cell wall
Site of chemical
processes
U
Vacuole
Control the movement of
Substances in and out of
The cell
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Function
UNICELLULAR AND MULITICELLULAR
6. a) Name the organisms shown in Diagram 6.
P : ___________________
Q : ____________________
R : __________________
S : _____________________
Diagram 6
b)
Group the organisms in Diagram 6 into unicellular or multicellular
organisms
Unicellular
Multicellular
i
______________________
i
__________________________
ii
______________________
ii
_________________________
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Cell organisation
7. Match the name to the correct part of the cell organisation in human.
Name
Part of cell organisation
Cell
P
System
Q
R
Tissue
Organ
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S
8. Show the organisation of cells in the human body by filling in the boxes below with the
words given.
System
tissue
organ
cell
organism
e
Made up of different
systems that work
together
d
Made up of
different organs
c
made up of
different tissues
b
made up of
the same type
of cells
a
the basic
unit
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1.3 MATTER
1. Classify the following matter into solids, liquids or gases
a)
e)
Air in the
balloon
hot water
_____________
_______________
f)
`
b)
Hot air
balloon
______________
g)
___________________
c)
Wind from
windmill
Carbon monoxide
__________________
h)
d)
aeroplane
kerosene
___________________
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_________________
2) Match objects/substances below to their arrangement of particles
a) glue
b) coffee
c) smoke
i
i
d) breeze
e) mercury
f) blood
ii.
g) book
h) steam
i) oxygen
j) rainwater
iii.
k) thumbtack
l) cloth
m) droplets
n) salt solution
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1.4 THE VARIETY OF RESOURCES ON EARTH
THE CONCEPT OF DENSITY
The density of substance is the mass of the substance in a unit
volume.
The unit for density is kg/m³ or g/cm³
DENSITY (D) =
MASS (M)
VOLUME (V)
1. What is …………
M
a. D = _______
D
V
V
= _________
Example 1
The mass of 5cm³ of iron is 10.0g. What is its density?
The density of iron =
Mass
Volume
=
10.0g
5cm³
2 g/cm³
=
2.The mass of an object is 30 g. What is its density if it has a volume
of 12 cm³ ?
3.The volume of R was determined to be 40cm³ in an experiment. If the
density of solid R is 0.5 g/cm³. What is its mass?
4.The mass of piece of stone is 360g and its volume is 200cm³. What is the
density of the stone?
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A less dense substance FLOATS in a denser liquid
Whereas a denser substance SINKS in a less denser liquid
STONE
OIL
WATER
CORK
5.
The substances are put together according to a, b, c, and d.Draw the
position.
a.
Stone and Water
b.
Cork , water and oil
d. Stone, water ,oil and Cork
Water and oil
.
c.
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6.
Diagram 6 shows the densities of liquids Z, Y and X and solids P, Q and
R which are put into a measuring cylinder.
a. Arrange the density of liquid X, Y and Z in an ascending order?
b. Arrange the density of liquid X, Y and Z in a descending order?
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c. Arrange the solids P, Q and R in an ascending order?
d. Arrange the solids P, Q and R in a descending order?
e. Arrange P,Q, R , X, Y and Z in an ascending order?
f . Arrange P, Q ,R , X, Y and Z, in a descending order?
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7. Diagram 7 shows the arrangement of particles in three substances, J, K and L.
Label J, K and L using the following words:
Element
Compound
Mixture
J
K
L
E_ _ _ _ _ t
C _m_ _ und
M_ xt__e
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8. Draw lines to show the correct match between the names of the substances
and the diagrams.
Compound
Mixture
Element
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1.5 THE AIR AROUND US
1. Diagram 1 shows the composition and percentage of the constituents of air.
C 0.03%
D
1%
B
21%
A
78%
Diagram 1
a)
b)
Identify the following gases based on Diagram 1
Nitrogen
Oxygen
Carbon dioxide
i.
Gas A :
___________________________
ii
Gas B :
____________________________
iii
Gas C :
_____________________________
State the confirmation test for the gases below :
i)
Gas B :
_______________________________________________
_______________________________________________
ii)
Gas C :
________________________________________________
_________________________________________________
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1.6 SOURCES OF ENERGY
1. State the forms of energy involved in the picture shown using the following word
Chemical energy
Heat energy
Sound energy
Kinetic energy
Nuclear energy
a)
b)
c)
d)
e)
f)
g)
h)
i)
DIAGRAM 1.1
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Light energy
2. Diagram 2 shows various sources of energy on earth
D
D
C
E
F
Diagram 2
Name the energy sources that represented by
A : ..................................................................................
B : ..................................................................................
C: ...................................................................................
D : ..................................................................................
E : ……………………………………………………………
F :……………………………………………………………
G :……………………………………………………………
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G
1.7 HEAT
1. On diagram 1, draw and label the heat flow of sea breeze and land
breeze using the given information.
Hot air rises
cool air from the sea
hot air from land
______
a. ……………….....
Land breeze
c………………..
Hot air
b. …………..
Land
Sea breeze
Sea breeze
Diagram 1
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2. The change of state of matter involves absorption or release of heat energy.
a) Draw the particles arrangement of ice when heated
Before heating
After heating
b) Draw the particles arrangement of ice when melted
Before melting
After melting
c) Draw the particles arrangement of water when frozen
Before freezing
After freezing
d) Draw the particles arrangement of water when boiled
Before boiling
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After boiling
e) Draw the particles arrangement of water when cooled
Before cooling
After cooling
f) Draw the particles arrangement of iodine crystals when heated
Before sublimation
After sublimation
g) Draw the particles arrangement of steam when cooled
Before condensation
After condensation
h) Draw the particles arrangement of water when evaporated
Before evaporation
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After evaporation
5. Draw the particles of X, Y and Z in the box given.
X
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Y
Z