KUULCHAT
SCIENCE MOCK

OBJECTIVE TEST

1.

Tendrils in plants are adaptations that enable the plant to

A.

climb.

B.

expire.

C.

store food.

D.

reproduce.

E.

propagate vegetatively.

Answer: A

Tendril: a slender threadlike appendage of a climbing plant, often growing in a spiral form, that stretches out and twines round any suitable support.

2.

Which of the following form part of the alimentary canal?

I. Colon

II. Gullet

III. Liver

IV. Pancreas

A.

I and II only

B.

I and IV only

C.

II and III only

D.

II and IV only

E.
I, II and III only

Answer: A

3.

The edible part of the mango fruit is called

A.

endocarp

B.

drupe

C.

fibre

D.

mesocarp

E.
epicarp

Answer: D

4.

The following characteristics are features of all living things except ability to

A.

bring forth young ones.

B.

excrete.

C.

grow.

D.

move from place to place.

Answer: D

5.

The weight of an object is the

A.

force with which the sun pulls it

B.

force with which the moon pulls it

C.

force of the object when gravity is not acting on it

D.

force with which gravity acts on it

E.
mass of the object

Answer: D

6.

Crystals of sugar were obtained when a hot solution of sugar was cooled to room temperature. What conclusion can be drawn from this observation?

A.

Sugar does not dissolve in cold water

B.

Sugar does not dissolve in hot water

C.

Sugar dissolves more in hot water than in cold water

D.

Sugar dissolves less in hot water than in cold water

E.

Sugar dissolves more in cold water than in hot water

Answer: C

7.

Which of the following statements about the state of matter is correct?

A.

Molecules in a solid are disorderly arranged.

B.

Solids are highly compressible.

C.

Liquids have definite form and volume.

D.

Molecules in a gas move faster than those in a liquid.

Answer: D

8.

Which of the following instruments is connected in parallel across a resistor in an electrical circuit?

A.

Ammeter

B.

Voltmeter

C.

Ohmmeter

D.

Galvanometer

Answer: B

Voltmeter: is used to measure the potential difference between two points in an electrical circuit and its connected in parallel in an electric circuit

Ammeter: is used to measure the electric current in an electric circuit and it is connected in series in an electric circuit

Galvanometer: is used to detect the presence of small electric current and voltage and its connected in series

Ohmmeter: is used to measure the electrical resistance

9.

Digestion of protein begins in the stomach and ends in the

A.

large intestine.

B.

small intestine.

C.

appendix.

D.

caecum.

Answer: B

Mechanical digestion of protein begins in the mouth and continues in the stomach and small intestine. Chemical digestion of protein begins in the stomach and ends in the small intestine.

10.

An atom has 5 protons and 5 neutrons in its nucleus. How many electrons are present in the atom?

A.

1

B.

2

C.

5

D.

9

E.

10

Answer: C

In a neutral atom, the number of protons is equal to the number of electrons.

11.

A force meter measures

A.

mass.

B.

temperature.

C.

weight.

D.

work.

Answer: C

Force meter measures force/weight of an object

12.

Calcium oxide and water reacts to form calcium hydroxide. The formula for the product is

A.

Ca2OH

B.

Ca(OH)2

C.

CaH2O

D.

Ca(H2O)2

Answer: B

CaO + H2O → Ca(OH)2

13.

Soil fertility can be conserved by all the following methods except

A.

mulching

B.

afforestation

C.

deforestation

D.

crop rotation

E.
green manuring

Answer: C

14.

Decay is an important biological process because it brings about the

A.

formation of nutrients in living organisms

B.

manufacture of cells of living organisms

C.

production of oxygen by plants

D.

release of nutrients from dead organisms

E.
release of waste substances from bacteria

Answer: D

15.

Which of the following chemical equations is balanced?

A.

K + O2→K2O

B.

Mg + O2→MgO

C.

Na + Cl2→NaCl

D.

H2 + Cl2→2HCl

Answer: D

16.

Which of the following practices in the home can prevent disease infection?

A.

Covering one's food

B.

Drinking unclean water

C.

Keeping one's surrounding untidy

D.

Sharing towels and sponges

Answer: A

17.

Sperms produced by the testes in humans are temporarily stored in the

A.

epididymis.

B.

prostate gland.

C.

seminal vesicles.

D.

sperm duct.

Answer: A

18.

A ray of light makes an angle of 20o with the surface of a plane mirror. Determine the angle of reflection.

A.

20o

B.

50o

C.

70o

D.

90o

E.

120o

Answer: C

Angle of incidence = Angle of reflection

20o + Angle of incidence = 90o

Angle of incidence = 90 - 20
Angle of incidence = 70o

Angle of incidence = Angle of reflection
Angle of reflection = 70o

19.

The dry season in Ghana is mainly from

A.

January to March

B.

April to June

C.

July to September

D.

October to December

Answer: A

The dry season is the period where there is very little or no rainfall. In the southern part of Ghana, the dry season occurs between November to February. The period is much longer in the Northern part which occurs between November to June.

20.

The outer ear is also referred to as

A.

cochlea

B.

tympanum

C.

pinna

D.

incus

E.
malleus

Answer: C

21.

Which of the following properties of alcohol as a thermometric liquid is correct?

A.

It is opaque.

B.

It does not wet glass.

C.

It has a very flow freezing point.

D.

It has a high freezing point.

Answer: C

22.

A mango of mass 2 kg hangs 15 m on top of a mango tree. Determine the value of the kinetic energy attained just before it hits the ground. [g = 10 m s-2]

A.

30.0 J

B.

225.0 J

C.

300.0 J

D.

3.0 J

Answer: C

Just before the mango hits the ground, the kinetic energy equals the potential energy (at rest at the top).

Potential energy = mass x acceleration due to gravity x height.

Potential energy = 2 kg x 10 m s-2 x 15 m

Potential energy = 300 J

23.

It is easier to move a heavy load with a crowbar when the

A.

effort distance is shorter than the load distance.

B.

effort distance is longer than the load distance.

C.

effort distance is equal to the load distance.

D.

effort is equal to the load.

Answer: B

24.

Spectacles fitted with concave lenses are worn by people suffering from

A.

loss of accommodation.

B.

total blindness.

C.

long sightedness.

D.

short sightedness.

Answer: D

Concave Lenses are for the short sightedness and convex for the long sightedness.

25.

The by-product of photosynthesis is

A.

carbon dioxide.

B.

starch.

C.

oxygen.

D.

water.

Answer: C

Equation of photosynthesis

6CO2 + 6H2O → C6H12O6 + 6O2.

This means that the reactants, six carbon dioxide molecules and six water molecules, are converted by light energy captured by chlorophyll (implied by the arrow) into a sugar molecule and six oxygen molecules, the products.

26.

In flowering plants, the stamen is made up of

A.

anther and stigma.

B.

anther and filament.

C.

stigma and filament.

D.

stigma and style.

Answer: B

27.

Which of the following bodies is a satellite of the earth?

A.

Mars

B.

Sun

C.

Venus

D.

Moon

E.
Mercury

Answer: D

28.

If a mixture of water and powdered charcoal is allowed to stand for a long time, the charcoal

A.

raises to the top.

B.

settles at the bottom.

C.

dissolves completely in the water.

D.

continues to remain suspended in the water.

Answer: B

29.

Which of the following apparatus is not required in the process of distillation in the laboratory?

A.

Condenser

B.

Evaporating dish

C.

Bunsen burner

D.

Round bottom flask

Answer: B

30.

Which of the following statements about a transistor is correct?

A.

It can be used to amplify current.

B.

It is similar to three diodes.

C.

It consists of two leads only.

D.

It has three junctions.

Answer: A

31.

Elements that could easily lose electrons to form cations are

A.

metals.

B.

non-metals.

C.

semi-metals.

D.

noble gases.

Answer: A

32.

An atoms has 4 protons and 5 neutrons in its nucleus. How many positively charged particles are in the atom?

A.

1

B.

2

C.

3

D.

4

E.

5

Answer: D

Protons are positively charged. Hence since there are 4 protons, the atom has 4 positively charged particles.

33.

Which of the following substances has a definite shape?

A.

Air

B.

Kerosene

C.

Stone

D.

Water

Answer: C

34.

The diagram below shows a lever system used to move a stone. Use it to answer the question below

The distance X is the

A.

effort distance.

B.

load distance.

C.

fulcrum.

D.

lever arm.

Answer: B

Load Distance: is the distance between the pivot (fulcrum) and the load
Effort Distance: Is the distance between the pivot (fulcrum) and the effort

35.

Which of the following is an excretory organ?

A.

Anus

B.

Eye

C.

Heart

D.

Skin

E.
Pancreas

Answer: D

36.

Friction is defined as a force which

A.

accompanies motion

B.

acts against motion

C.

causes motion

D.

makes motion easy

E.
is created by motion

Answer: B

37.

The main function of petals in a flower is to

A.

protect the ovary.

B.

produce seeds.

C.

attract insects.

D.

secret nectar.

E.

produce sweet scent.

Answer: C

38.

A body of mass 50 kg falls through a height of 5 m. If the acceleration due to gravity is 10 ms-2, calculate the loss in potential energy.

A.

50 J

B.

250 J

C.

500 J

D.

2500 J

Answer: D

Potential Energy = Mass x Acceleration due to gravity x Height
Mass = 50 kg
Acceleration due to gravity = 10 ms-2
Height = 5 m
Potential Energy = 50 x 5 x 10 J
Potential Energy = 2500 J

39.

In which of the following devices is electrical energy transformed into light energy

A.

Electric bell

B.

Fluorescent tube

C.

Lantern

D.

Radio

Answer: B

A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light.

40.

Contour ploughing is normally practiced on

A.

hard-rocky lands

B.

muddy lands.

C.

non-fertile lands.

D.

sloppy lands.

Answer: D

Contour ploughing is practiced generally on sloppy lands to prevent soil erosion.

THEORY QUESTIONS

1.

a)

State three differences between molecules in a solid state and liquid state.

b)

i)

What is a solution?

ii)

Differentiate between solutions and mixtures in terms of particle sizes.

c)

Name the elements which make up the following compounds:

i)

water

ii)

common salt

iii)

ammonia

d)

Copy and complete the table below

Disease Vector Causative agent Symptoms
Malaria
Sleeping sickness

e)

i)

What is a man-made satellite?

ii)

Give two examples of natural satellites.

iii)

Mention two applications of man-made satellites

a)

Differences between molecules in a solid state and liquid state

Solid Liquid
Forces of attraction (cohesive force) between molecules are very strong Forces of attraction (cohesive force) between molecules are weak/less strong
Molecules are compacted/closely packed Molecules are less compacted/loosely packed
Molecules occupy fixed positions in a lattice Molecules move about randomly
Molecules vibrate about a mean position Molecules vibrate about a moving point
Molecules have low kinetic energy Molecules have high kinetic energy

b)

i)

Solution is a uniform/homogenous mixture of two or more substances.

ii)

Differences between solutions and mixtures in terms of particle sizes

Solution Mixture
Particles of the solute are far smaller than those of the solvent Particles of the solute are of comparable size as particles of the solvent
Particles are not easily distinguishable/seen Particles are easily distinguishable/seen

c)

Compounds and their elements

i)

water → Hydrogen and Oxygen

Note: Water is H2O

ii)

common salt → Sodium and Chlorine

Note: common salt is sodium chloride (NaCl)

iii)

ammonia → Hydrogen and Nitrogen

Note: ammonia is NH3

d)

Disease Vector Causative agent Symptoms
Malaria Female anopheles mosquito Plasmodia

1. Fever
2. Nausea
3. Vomiting
4. Loss of appetite
5. Bitter taste in the mouth
6. Sweating
7. Shivering
8. Headache
9. Rise in body temperature
10. Dizziness

Sleeping sickness Tsetse fly Trypanosoma

1. Sleepiness
2. Tiredness
3. Weakness
4. Drowsiness

e)

i)

Man-made satellite or Artificial satellite is a small object put/launched into space by man to orbit (move around) a planet.

ii)

Examples of natural satellites

1. Moon around the earth
2. Earth around the sun
3. Moon around Mars

iii)

Applications/Uses of man-made/Artificial satellites

1. For exploring the planets/moons
2. For scientific research/experimental research/internet
3. To study the universe
4. For communications/broadcasting/telephone call
5. For weather forecast/collecting information on the weather
6. Map making
7. Spying
8. For navigation/satellite for navigation
9. Military purposes

2.

a)

i)

Mention four female sexual characteristics of a human being.

ii)

Name two sense organs in mammals

iii)

Give one function of each of the sense organs named

b)

Define each of the following terms:

i)

compound

ii)

mixture

c)

List the particles that make up an atom.

d)

State the energy changes that take place in each of the following processes.

i)

An orange falls from a tree to the ground

ii)

A carpenter hits a nail with a raised hammer.

a)

i)

Female sexual characteristics of a human being

1. Vagina
2. Ovaries
3. Womb/uterus
4. Fallopian tubes
5. Cervix
6. Vulva
7. Breast

ii)

Sense organs in mammals

1. Eyes
2. Ears
3. Nose
4. Tongue
5. Skin

iii)

Function of the sense organs

1. Eyes → for sight
2. Ears → for hearing
3. Nose → for smelling
4. Tongue → for tasting
5. Skin → for feeling and excreting sweat

b)

i)

A compound is the substance formed as a result of the chemical combination of two or more elements.

OR

A compound is a substance which is made up of two or more elements chemically combined.

ii)

A mixture is what is formed when two or more substances are combined physically

OR

A mixture is the substance formed as a result of the physical combination of two or more substances which can be separated by physical means.

c)

The particles that make up an atom

Proton, neutron and electrons

d)

Energy changes

i)

An orange falls from a tree to the ground

Potential energy → Kinetic energy → Sound energy + Heat energy

ii)

A carpenter hits a nail with a raised hammer

Potential energy → Kinetic energy → Sound energy + Heat energy

3.

(a)

State one function of each of the following organs in humans

(i)

skin

(ii)

lung

(iii)

kidney

(iv)

testis

(b)

(i)

What is vegetative reproduction?

(ii)

Name two plants which reproduce vegetatively

(c)

Name four main factors which determine the climate of a place

(d)

Define the following:

(i)

work

(ii)

power

(e)

Name the separation method used in the production of each of the following substances

(i)

akpeteshie (alcohol)

(ii)

common salt

(iii)

tap water

(a)

(i)

Functions of the skin

1. It excretes waste substances/urea/water/salts/sweat
2. It protects the body from injury
3. It regulates body temperature
4. It gives sense of touch

(ii)

Functions of the lung

1. Gaseous exchange occurs in the lungs/there is intake of oxygen and output of carbon dioxide and water vapour in the lungs
2. Excretion of carbon dioxide and water vapour takes place in the lungs

(iii)

Functions of the kidney

1. It excretes urea/water and salt
2. Urine formation

(iv)

Function of the testis

Sperm production

(b)

(i)

Vegetative reproduction is a form of reproduction whereby plants produce young ones from growing parts/buds of the parent plant.

(ii)

Plants which reproduce vegetatively

1. Potato
2. Yam
3. Cocoyam
4. Canna lily
5. Onion
6. Plantain
7. Banana
8. Ginger
9. Pineapple
10. Bryophyllum
11. Sugar cane
12. Cassava
13. Fern
14. Elephant grass
15. Tiger nuts
16. Garlic

(c)

Factors which determine the climate of a place

1. Wind
2. Rainfall
3. Temperature
4. Sunshine
5. Humidity
6. Vegetation
7. Latitude
8. Altitude

(d)

(i)

Work is said to be done when the point of application of a force moves an object through a distance in the direction of the force.

OR

Work is said to be done when a force moves a body through a distance in the direction of the force.

OR

Work is the product of force and the distance moved in the direction of the force.

OR

Work = Force x distance moved in the direction of the force

(ii)

Power is the rate of doing work.

OR

Power is the rate at which energy is dissipated

OR

Power = Work done Time taken

(e)

Method of separation used in the production of:

(i)

akpeteshie (alcohol) → Distillation

(ii)

common salt → Evaporation/crystallisation

(iii)

tap water → Filtration/sedimentation/coagulation

4.

(a)

The diagram below represents the stages in the life cycle of a mosquito.

Study the diagrams carefully and answer the questions that follow.

(i)

Name each of the stages labelled I, II, III and IV.

(ii)

State how stage II obtains oxygen.

(iii)

State two methods of controlling each of the stages labelled III and IV.

(b)

The diagrams below are different laboratory set-ups used in the separation of mixtures.

Study the diagrams carefully and answer the questions that follow.

(i)

Name each of the parts labelled I, II, III, IV and VI.

(ii)

Name the separation method represented by each diagram.

(iii)

Which of the set-ups is used to obtain clear water from muddy water?

(iv)

Which of the set-ups is used to obtain salt from salt solution?

(c)

The diagrams below show some instruments used in the laboratory.

Study the diagrams carefully and answer the questions that follow.

(i)

Identify each of the instruments labelled I, II, III, IV and V.

(ii)

State one use of each of the instruments labelled I, II, III and IV.

(iii)

Read and record the volume of the liquid in the instrument labelled V.

(d)

The diagram below shows the digestive system of a class of farm animals.

Study the diagram carefully and answer the questions that follow.

(i)

Name each of the parts labelled I, II, III and IV.

(ii)

State one function each of the parts labelled II and IV.

(iii)

Name two farm animals that possess this type of digestive system.

(iv)

Mention two diseases which affect this class of farm animals.

(a)

(i)

I → (Raft of) eggs
II → Larva
III → Pupa
IV → (Adult) mosquito

(ii)

How the larva obtains oxygen

It takes oxygen from the atmosphere/surface of water through its breathing tubes.

(iii)

Methods of controlling pupa

1. Introducing predators such as fishes into stagnant water or pond water/use of biological methods of control
2. Pouring of oil/kerosene on surface of the water
3. Draining of stagnant water

Methods of controlling adult mosquito

1. Spray with/Use of insecticides to kill adult mosquito
2. Use of mosquito coil
3. Clearing of weeds/bushes around houses
4. Use of special electric bulbs
5. Use f special paints such as Inesfly
6. Use of treated mosquito net

(b)

(i)

I → Beaker
II → Evaporating dish
III → Bunsen burner
IV → Funnel
VI → Tripod stand

(ii)

Methods of separation of mixtures

A → Filtration
B → Evaporation
C → Sublimation

(iii)

Set-up A / Filtration

(iv)

Set-up B / Evaporation

(c)

(i)

I → Tape measure/Surveyor's tape/Measuring tape/Tape
II → Stop clock/Stop watch
III → Thermometer
IV → Weighing scale / Balance/ Top pan balance
V → Measuring cylinder

(ii)

Use of instruments labelled

I → For measuring lengths/distance
II → For measuring time
III → For measuring temperature
IV → For measuring weight or mass of objects

(iii)

The volume of the liquid in the measuring cylinder is 160 cm3

(d)

(i)

I → Oesophagus
II → Gizzard
III → Liver
IV → Crop

(ii)

Function of II (Gizzard)

It is for grinding food.

Function of IV (Crop)

It is used to temporarily store food.

(iii)

Farm animals that possess this type of digestive system

1. Fowl/chicken
2. Cattle/cow
3. Turkey
4. Goat
5. Ducks
6. Sheep
7. Guinea fowl
8. Horse

(iv)

Diseases which affect this class of farm animals

Monogastrics

1. Coccidiosis
2. Pullorum
3. Newcastle
4. Fowl pox
5. Gumboro
6. Bacillary diarrhea
7. Fowl cholera
8. Chronic respiratory disease
9. Bird/Avian flu

Ruminants

1. Foot and mouth disease
2. Anthrax
3. Cow pox/Vaccinna
4. Rinderpest
5. Goat pox
6. Pneumonia
7. Tryponosomiasis/Nagana
8. Tuberculosis

5.

(a)

(i)

What is germination of seed?

(ii)

State two conditions necessary for the germination of seed.

(b)

State four methods used in identifying farm animals.

(c)

Explain why it is easier to cut a piece of yam with a sharp knife than with a blunt knife.

(d)

State three differences between a metal and a non-metal.

(a)

(i)

Germination of seed is the sprouting/growth/development of the embryo/seed to produce a new plant/seedling.

(ii)

Conditions necessary for the germination of seed

1. Nature of seed coat
2. Water/moisture
3. Air/Oxygen
4. Suitable/optimum temperature/warmth
5. Viability of the seed
6. Enzymes
7. Sunlight/light
8. Dormancy period

(b)

Methods used in identifying farm animals

1. Tattooing
2. Banding
3. Ear tagging
4. Clipping
5. Leg tagging
6. Dyeing
7. Ear notching/punching
8. Implantation of microchips/radio transmitter

(c)

Why it is easier to cut a piece of yam with a sharp knife than with a blunt knife

Pressure is inversely proportional to the surface area.

Pressure = Force Area

Pressure ∝ 1 Area

With the same force, the smaller the surface area, the greater the pressure.

A sharp knife has a smaller surface area than a blunt knife. The same force used on each knife, will give greater pressure on the sharp knife than the blunt knife (smaller pressure) making cutting easier.

(d)

Differences between a metal and a non-metal

# Metal Non-metal
1. Normally solid Can be solid or liquid or gas
2. Corrosive Non corrosive
3. Attracted by magnet Not attracted by magnet
4. Conducts electricity Does not conduct electricity/poor conductor of electricity
5. Conducts heat/good conductor of heat Does not conduct heat/poor conductor of heat
6. Malleable Not malleable
7. Ductile Not ductile/Brittle
8. High density Low density
9. High melting point Low melting point
10. Has shinning/lustre surface Has dull surface
11. Gives out electrons (forms cations) as reducing agent Receives/accepts electrons (forms anions) as oxidizing agent
12. High tensile strength Low tensile strength
6.

a)

i)

State three effects of soil erosion on the growth of crop plants.

ii)

Mention one method of controlling soil erosion.

b)

i)

Name two science related businesses.

ii)

State the principles underlying the operation of each of the businesses named in (i).

c)

i)

Explain how the female Anopheles mosquito transmits malaria to humans.

ii)

State one chemical method of controlling mosquitoes.

d)

i)

Name two fundamental units of measurement.

ii)

State the physical quantity that one of the units named in (i) measures.

a)

i)

Effects of soil erosion on the growth of crop plants

1. Loss of soil nutrients or nutrient imbalance or poor crop growth or yield
2. Destruction/death of crops
3. Increased cost of production or high doses of fertilizer needed to replenish soil
4. It is difficult to move farm machinery due to gullies
5. It causes siltation of dams or irrigation channels
6. Degradation of soil structure
7. Loss of rooting depth
8. Poor/stunted growth
9. Shows deficiency disease
10. Lodging of crop plants

ii)

Method of controlling soil erosion

1. Terracing
2. Strip cropping
3. Contour ploughing
4. Wind breaks/afforestation/planting
5. Mulching
6. Cover cropping
7. Crop rotation
8. Application of ogranic manure
9. Minimum/zero tillage
10. Afforestation

b)

i)

Science related businesses

1. Blacksmithing
2. Gari processing
3. Soap making
4. Salt production
5. Kenkety production
6. Biogas production
7. Fish smoking

ii)

State the principles underlying the operation of each of the businesses named

1. Blacksmithing → forging/shrinking/bonding/malleability
2. Gari processing → fermentation
3. Soap making → saponification
4. Salt production → evaporation
5. Kenkety production → fermentation
6. Biogas production → decomposition
7. Fish smoking → dehydration/drying

c)

i)

How the female Anopheles mosquito transmits malaria to humans

1. It bites an infected person, takes in blood infected with the malaria parasite
2. The parasite grows and matures in the mosquito's gut, then travels to the salivary glands
3. When the mosquito bites another person, it releases the parasites into the victim's body

ii)

Chemical method of controlling mosquitoes

1. Adding oil/kerosene on surface of stagnant water
2. Spraying with insecticide
3. Using treated mosquito nets
4. Use of mosquito coil

d)

i)

Fundamental units of measurement

1. Metre
2. Second
3. Kilogram
4. Degree celcius/kelvin

ii)

Physical quantity that the units named in (i) measures

1. Metre → length
2. Second → time
3. Kilogram → mass
4. Degree celcius/kelvin → temperature