Upload
nixleon
View
237
Download
0
Embed Size (px)
Citation preview
7/27/2019 Mid Test Set 4
1/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
Mid Test1. P, Q, R and S are steps in a scientific
experiment. State the correct sequence.
P Making a hypothesis
Q Forming a summary or conclusion
R Identifying the problem
S Testing the hypothesis by doing an experiment
2. 20 cm 3 of water is poured into a 40 cm 3bottle. If one iron shot can displace 0.2 cm
3
water, how many iron shots are needed to
completely fill the bottle?
3. Figure below shows an outline of a leaftraced on a piece of graph paper. Estimate
the area of the leaf.
4. When 20 drops of water flow out of avertical burette, the water level changes
from 40 cm3
to 45 cm3. Calculate the
volume of a drop of water.
5. Amir wishes to determine the volume of amarble. He uses 10 marbles of the same sizeand a measuring cylinder. Based on the
below figure, what is the volume of one
marble?
6. W, X, Y and Z are steps taken whenmeasuring the temperature of a human body.
State the correct sequence.
W Put the thermometer under the tongue
for a few minutes
X Dip the thermometer into a beaker
containing antiseptic
Y Shake the thermometer
Z Take the reading of the thermometer
7. Figure below shows a simple pendulummoving fromX to Zand then back again to
X. Which of the following influences the
period of oscillation of a simple pendulum?
A The weight of the pendulum
B The thickness of the thread
C The length of the thread
D The number of oscillations
8. The distance between P and Q shown in thebelow figure can be measured by using
I some thread and a meter rule
II internal calipers and a meter rule
III external calipers and a piece of graph
paper
9. Figure below shows a non luminous flameof a Bunsen burner. K,L,MandNare three
different areas of the flame. Which areas
have the highest and lowest temperature?
10. A human cheek cell and an onion cell aresimilar because both possess
A nuclei C vacuoles
B cell walls D chloroplasts
7/27/2019 Mid Test Set 4
2/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
11. Which structure can only be found in a plantcell?
A Cell membrane C Cytoplasm
B A nucleus D A chloroplast
12. Based on the information given below,which is true aboutR, Sand T?
R A group of cells performing
the same function
S A basic unit of a living
organism
T A few groups of tissues
involved in a specific function
R S T
A Liver Muscle Ovum
B Muscle Ovum Liver
C Ovum Muscle Liver
D Liver Ovum Muscle
13. Based on the below information, which iscorrect about organXand system Y?
OrganX Organ Y
A Ear Respiratory
B Alveolus DigestiveC Uterus Reproductive
D Red blood cell Circulatory
14. Which structure labelled A, B, C or D asshown in the below figure is not found in an
animal cell?
15. Which part of a plant cell as shown in thebelow figure is not found in an animal cell?
I cytoplasm II Big vacuoles
III Cell walls
16. Figure below shows the structure of a cell.Which organism has this type of cell?
I A rabbit II A cockroach
III A mushroom
17. Figure below shows the organization of cellsin the human body. Which of the following
are examples of stage P?
A Stomach, platelet, eye
B Kidney, sperm, ear
C Liver, ovum, lung
D Uterus, skin, nose
18. Which of the following statements show thathuman is special compared to other living
things?
I Human can think rationally
II Human can communicate with oneanother
III Human suckles, takes care and teaches
his young
19. Some potassium (VII) manganate crystalsare put into a test tube containing water asshown in the figure above. Which of the
following is seen after a few days?
7/27/2019 Mid Test Set 4
3/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
20. Figure below shows the different weights ofwater, ethanol, benzene and carbon
tetrachloride. The volume of the liquids and
the size of the beakers are similar. State the
correct arrangement of liquids according to
descending densities.
21. 10 cm 3 of copper (II) sulphate crystals arestirred into 200 cm
3of water in a measuring
cylinder. When all the crystals have
dissolved, the volume of the solution in the
measuring cylinder is still 200 cm 3. Why?
A Copper (II) sulphate molecules enter the
water molecules.
B Copper (II) sulphate molecules become
smaller when they change from solid to
liquid.
C Water molecules become closer in a
copper (II) sulphate solution.
D Copper (II) sulphate molecules enter the
spaces between the water molecules.
22. Table below shows the different densities offour liquids J, K, L and M. The four liquids
with similar volumes are poured into fourdifferent gas jars. Then a wooden cube with
a length of 3 cm and a mass of 18.9 g is put
into each gas jar. In which liquid will the
wooden cube sink?
Liquid Density (g cm 3
)
J 0.63
K 0.87
L 1.0
M 1.3
23. In cold countries, we see ice floating in theriver or pond because
A ice molecules are smaller than water
molecules
B the molecules of ice are very close to
one another
C the mass of ice becomes less when
water freezes
D the density of ice is less than the density
of water
24. What will happen to the molecules in matterwhen it becomes cold?
I The kinetic energy will decrease
II The number of molecules will become
less
III The molecules will become smaller
25. How do ice and steam molecules differ fromeach other? They have different
I amounts of kinetic energy
II distances between molecules
III molecule sizes
26. Which object will float on a liquid whichhas a density of 1.26 g cm
3?
Object Density (g cm 3
)
I Ice cube 0.90
II Charcoal 1.60
III Glass stopper 2.50
27. Figure below shows three different solids P,Q and R with different masses but with the
same volume. State the arrangement of
density according to ascending order.
28. K, L and M are three liquids which do notmix. Solids P and Q are put inside and the
result is shown in the below figure. State the
arrangement ofK, L,M, P and Q according
to descending order of density.
29. Table below shows the densities of fivedifferent kinds of substances V, W, X, Yand
Z. all the five substances are put into a
cylinder and left for a while. Which of the
following positions is correct for substances
V, W,X, YandZ?
7/27/2019 Mid Test Set 4
4/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
A C
B D
30. The tyres of a bicycle become deflated afterone week. This is because the air molecules
in the tyres
A have diffused out.
B have become smaller.
C have become less dense.
D have weak forces of attraction betweeneach other.
31. Based on the key, which of the following isa molecule?
I II
III
32. When ice melts,I its molecules become bigger.
II the distance between the molecules is
further apart.
III the kinetic energy of ice molecules
increases.
33. Which of the following statements is trueabout the air molecules when a balloon isbeing blown?
I The air molecules are closer to each
other.
II The rate of collision among air
molecules increases.
III The air molecules in the balloon
become bigger.
34. Which of the following activities does notapply the principle of density?
I Drying fish on the beach
II Floating timber in the river
II Spraying oil onto the surface of water to
kill mosquito larvae
35. Based on the below figure, what will nothappen if all the plants are destroyed?
A The amount of carbon dioxide will
increase
B The amount of oxygen will increase
C The amount of mineral salts will
increase
D Earths temperature will increase
36. Which of the following reactions willseparate the elements in a compound?
A Burning a magnesium tape
B Dissolving sodium hydroxide in water
C Electrolysis of water
D Evaporating a salt solution
37. Which of the following processes can beused to separate the elements in a
compound?
A Sublimation C Distillation
B Electrolysis D Filtration
38. The information given below are the stepsthat should be taken to separate a mixture of
sand, iron filings and common salt. State the
correct sequence when separating the three
substances.
P EvaporateQ Filter
R Dissolve in water
S Use a magnet
39. Figure below shows the classification ofmatter. Which of the following represent X,
YandZ?
7/27/2019 Mid Test Set 4
5/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
X Y Z
A Ammonia Copper Sulphur
B Sugar Aluminium Iron
C Air Tin Carbon
D Petroleum Zinc Potassium
40. Soil is important to plant because it providesI mineral salts II food
III carbon dioxide
41. Figure below shows the change of state ofwater from the state ofJto the state ofK.J
and K are different states. Which of thefollowing arrangements of particles
representJand K?
State J State K
A
B
C
D
42. Figure below shows the classification ofmatter. Which of the following most
probably representR, Sand T?
R S T
A Non metals Mercury Bromine
B Non metals Bromine Mercury
C Alloys Mercury Bromine
D Alloys Bromine Mercury
43. Which of the following experiments andobservations determine if substances X, Y
andZare compounds or not?
Experiment Observations
I The black
substance sticks to
the magnet and the
yellow substance
remains in the
crucible.
II Lime water turns
cloudy
III Gas P and Q are
collected in the test
tubes.
44. Figure below shows the classification ofmatter. Which of the following examples is
correct for G andH?
G H
A Carbon dioxide Chlorine
B Sodium chloride Copper
C Air Mercury
D Sodium Sulphur
7/27/2019 Mid Test Set 4
6/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
45. Based on the below figure, why do youthink the candle in beaker M burns for a
longer time than the candle in beakerN?
A There is more carbon dioxide in beaker
Mthan in beakerN
B There is more oxygen in beaker Mthan
in beakerN
C There is more water vapour in beakerM
than in beakerN
D The air pressure in beaker M is higher
than air pressure in beakerN
46.
A burning candle is put inside a gas jar thatcontains exhaled air. Which experiment in
the below figure indicates the correct water
level when the candle is extinguished?
A C
B D
47. Figure below shows the carbon cycle. Namethe processes labelledX, YandZ.
48. Which of the following processes helps tomaintain the amount of oxygen and carbon
dioxide in the atmosphere?
A Transpiration and photosynthesis
B Transpiration and respiration
C Decomposition and transpiration
D Photosynthesis and respiration
49. Figure below shows an experiment to findthe percentage of oxygen used by a burning
candle. When the candle extinguishes, find
the percentage of oxygen used.
50. Three test tubes containing oxygen, carbondioxide and nitrogen are inverted into three
beakers containing pyrogallol solution as
shown in the below figure. After a few
minutes, what will happen to the level of
pyrogallol in test tubesX, YandZ?
X Y Z
A Unchanged Rise Rise
B Unchanged Rise Unchanged
C Rise Unchanged UnchangedD Rise Rise Rise
51. The rise in the temperature of the Earthcaused by increased carbon dioxide levels is
called
A the thinning of the ozone layer
B the greenhouse effect
C air pollution
D a drought
52. Table below shows the different percentagesof gases in normal air and exhaled air. Whatprocess cause the differences in percentage
between the two types of air?
Gas Normal air Exhaled air
Nitrogen 78 % 78 %
Oxygen 21 % 16 %
Carbon dioxide 0.03 % 4 %
Inert gases 1 % 1 %
Water vapour Less More
7/27/2019 Mid Test Set 4
7/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
53. The pie chart below shows the percentage ofgases P, Q, R, S and T in the atmosphere.
Which statement is true about the percentage
of gases in exhaled air and in normal air?
I The percentage of gas Q in exhaled air
decreases
II The percentage of gas P in exhaled air
is unchanged
III The percentage of gas R in exhaled air
increases
54. Which of the following pairs of pollutantsand effects is not correct?
Pollutant Effect
A Chlorofluorocarbons Thinning of the
ozone layer
B Lead compounds Damage to the
nervous system
C Carbon monoxide Retards the growth of
plants
D Soot Causes respiratory
problems
55. Figure below shows an experiment carriedout by a student. A few tests were done on
the gas that was released. Which of the
following observation(s) about the
experiment is true?
I Water droplets were formed on the
inner surface of the gas jar.
II Lime water which was poured into the
gas jar became cloudy
III Moist blue litmus paper changed to red
56. a) Define volume.b) State the SI unit for volume.
c) Change the following measurements to
cm3.
i) 215 ml ii) 0.95 liter
iii) 0.00005 m3
57. a) State the SI unit for weight.b) Why does the weight of an object vary
in different places?
c) Fill in the chart below.
Kilograms Grams Milligrams
2.5
84
63 000
0.00258
58. List the similarities and differences betweenmass and weight in the chart below.
Mass Weight
Similarities
Differences (Aspects)
Definitions
Measuring
instruments
Values
SI units
59. a) What is microorganism?b) Name four main groups ofmicroorganisms.
60. a) Name the microorganisms labelledA,B,CandD.
b) Which of the microorganisms given by
you in (a) is protozoa?
61. a) Which cell structure is green in colourand can be found in plants?
b) What is the function of this cell?
c) State the function of
i) the nucleus of a cell,
ii) the cytoplasm.
7/27/2019 Mid Test Set 4
8/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
62. a) State the sequence of cell organizationin a multicellular organism.
b) Name the system that red blood cell
belongs to.
c) Why does our heart beat faster when we
are exercising?
d) If someones brain is injured, what will
happen to him?
63. a) Complete the following chart to showthe similarities, differences and the
functions of the various parts of an
animal and a plant cell.
Animal Plant
Similarities
i)
ii)
iii)
Differences (Aspects)
Shape
Chloroplast
Cell wall
Vacuole
b) State the function for each cell structure
in both animal and plant cells.
64. List 5 systems in the human body. Includethe functions of these systems.
65. a) What is a molecule?b) Why do gases diffuse very fast?
c) Why are solids more difficult tocompress?
66. An experiment is carried out to determinethe densities of a few solids. A lever balance
is used to measure the mass. A measuring
cylinder is used to measure the volume of
the solids. The measurements are recorded
in the below table.
SolidMass
(g)
Volume
(cm3)
Density
(g cm 3
)
Wood 4.8 6
Copper shot 17.8 2Cork 2.1 7
Lead shot 45.2 4
Glass stopper 12.0 4.8
a) Calculate the densities of the solids in
the table.
b) Arrange the solids in ascending order of
density.
c) Which solids will float on water?
d) Why?
e) What conclusion can you make from
this experiment?
67. State the differences and similaritiesbetween solids, liquids and gases based on
the following aspects.
Differences:
i) Particle arrangement
ii) Distance between particles
iii) Volume
iv) Force of attraction between particles
v) Movement of particles
Similarities (State 3)
68. a) What are the basic natural resources inthis world?
b) List three main gases found in theatmosphere and state their percentages.
69. Jamal puts a few cockroaches into a tightlyclosed can. The lid of the can has a few
small holes.
a) Why did Jamal make a few small holes
on the lid of the can?
b) What will happen if there are no holes
on the lid of the can?
c) Why do you say so?
70. Compare the characteristics of mixtures andcompounds. Write their similarities anddifferences.
Similarities: ...
Differences:
i) Energy change
ii) Ratio of components
iii) Substance formed
iv) Method of separation
71. Write the similarities and differences toshow the properties of metallic and non
metallic elements.
Similarities: ...
Differences:i) Surface appearance
ii) Ductility
iii) Malleability
iv) Boiling point
v) Melting point
vi) Electrical conductivity
vii) Heat conductivity
7/27/2019 Mid Test Set 4
9/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
72. a) Why are the carbon and oxygen cyclesimportant?
b) Why is oxygen important for
respiration?
c) How do plants help to control the
amount of carbon dioxide in the
atmosphere?
d) What causes the amount of carbon
dioxide in the atmosphere to increase?
e) What is the effect of excessive carbon
dioxide levels in the atmosphere?
73. Fill in the properties of oxygen (O2), carbondioxide (CO2) and nitrogen (N2) in the
below table.
O2 CO2 N2
Colour
Odour
Taste
Solubility in water
Solubility in sodium
hydroxide solution
Solubility in pyrogallol
solution
Moist litmus paper
Lime water
Hydrogen carbonate
indicator
Glowing splinter
Burning splinter
Confirmation test
7/27/2019 Mid Test Set 4
10/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
Answer1. R, P, S, Q 2. 100
3. 76 cm2
4. 0.25 cm3
5. 2.9 cm3
6. Y, W,Z,X
7. C 8. I
9. L,N 10. A
11. D 12. B
13. C 14. C
15. II, III 16. I, II
17. D 18. I, II
19. A 20. B
21. D 22. J
23. D 24. I
25. I, II 26. I
27. Q,R, P 28. M, Q,L, K, P
29. A 30. A
31. I, II 32. II, III
33. I, II 34. I
35. B 36. C
37. B 38. S,R, Q, P
39. A 40. I
41. C 42. A
43. II, III 44. A
45. B 46. B
47. X: photosynthesis; Y: respiration;Z: Burning
48. D
49. 20 % 50. C
51. B 52. Respiration
53. I, II 54. C
55. I, II
56. a) The volume of a matter is the space
occupied by it.
b) Cubic metre (m3)
c) i) 215 ii) 950
iii) 50
57. a) Newtons
b) The weight of an object depends on the
gravitational force of the Earth.
c) i) 2 500, 2 500 000
ii) 0.084, 84 000
iii) 0.063, 63
iv) 2.58, 2 580
58. Similarities: Both are due to the presence of
matter in an object.
Differences
Mass Weight
The amount of matter
in an object
The gravitational force
that acts on an object
Beam, lever, electronic Spring. Compression
Remains the same Depends on the
gravitational force
Kilograms Newtons
59. a) A tiny living thing that cannot be seen
with the naked eyes.
b) virus, bacteria, fungi, protozoa
60. a) A: yeast;B: paramecium;C: amoeba;D: euglena
b) Paramecium, amoeba, euglena
61. a) A chloroplast
b) Contains chlorophyll that is used to
carry out photosynthesis
c) i) Controls all the activities of a cell
ii) Contains dissolved substances such
as protein, minerals, vitamins and
starch
62. a) Cell Tissue Organ System
Organismb) Blood circulatory system
c) To transport more oxygen to every part
of the body
d) Part of or the whole body will become
paralyzed can cannot react to any
stimuli.
7/27/2019 Mid Test Set 4
11/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
63. Similarities: nucleus, cell membrane,
cytoplasm
Differences:
Animal Plant
Irregular Regular
Absent PresentAbsent Present
None / very small Big
Nucleus Controls all the activities of a cell
Cell
membrane
Controls the movement of
substances in and out of a cell
Cytoplasm The place where chemical
processes take place
Chloroplast Produces chlorophyll
Cell wall Protects and maintains the shape
of a cell
Vacuoles Contains dissolved substances
such as water, minerals and sugar
64. i) Digestive: Digests and absorbs food
ii) Excretory: Remove waste products
iii) Respiratory: Takes in O2 and gives out
CO2
iv) Nervous: Coordinates body activities
and helps to respond to any stimuli
v) Circulatory: Transport O2, CO2, food
and waste products
vi) Skeletal: Supports the body and protects
internal organs.
vii) Reproductive: Reproduces new
generations.
65. a) A molecule is a particle consisting of
two or more atoms that are chemically
combined together.
b) Gas particles are very far apart from one
another. Also the forces of attraction
between the gas particles are very weak.
c) Solid particles are very compact and the
spaces between them are very small.
66. a) Wood: 0.80; Copper shot: 8.90;
Cork: 0.30; Lead shot: 11.3;
Glass stopper: 2.50
b) Cork, wood, glass stopper, copper shot,lead shot
c) Cork and wood
d) The densities of cork and wood are less
than 1 g cm 3
(density of water)
e) Different substances have different
densities.
67. Differences
Solid Liquid Gas
Orderly Not orderly Very disorderly
Close Far Very far
Definite DefiniteIndefinite, depending
on the containerStrong Moderate Weak
Not free Free Very free
Similarities:
i) Made up of particles
ii) Occupies space
iii) Has volume
68. a) Air, water, soil
b) i) O2: 21 % ii) CO2: 0.03 %
iii) N2: 78 %
69. a) So that the cockroaches can breathe.
b) All the cockroaches will die after some
time.
c) Cockroaches need oxygen to live.
70. Similarities: Both consists of two or more
different substances.
Differences:
Compound Mixtures
Absorbs or releases
energy during its
formation
No energy is absorbed
or released during its
formation
Fixed Not fixed
New substance formed
which is different from
the original substance
No new substance in
formed
Chemically Physically
71. Similarities: Consists of only one kind of
atom
Differences:
Metallic Non metallic
Shiny Dull
Ductile Non ductile
Malleable Not malleable (brittle)
High Low
High Low
Good electrical
conductors
Electrical insulator
except carbon
Good Poor
7/27/2019 Mid Test Set 4
12/12
KC TUITION: 012 3877 265
Prepared By: K.C. Ngu Form One: Science Set 4
72. a) To control the composition of gases in
the air
b) Because cells need it for respiration
c) By carrying out photosynthesis
d) The burning of rubbish and fuels by
motor vehicles, factories and power
stations.
e) The temperature of the Earth will rise.
This is called the greenhouse effect.
73. Properties of O2, CO2, and N2
O2 CO2 N2
Colourless Colourless Colourless
Odourless Odourless Odourless
Tasteless Slightly sour Tasteless
Slightly soluble Soluble Insoluble
Insoluble Very soluble Insoluble
Very soluble Insoluble Insoluble
Unchanged Blue red Unchanged
Unchanged Cloudy Unchanged
Unchanged Red yellow Unchanged
Rekindles Extinguished Extinguished
Burns brighter Extinguished Extinguished
Rekindles a
glowing
wooden splinter
Turns lime
water cloudy