BECE 2016 Integrated Science Past Question Paper Two

1

(a) The funnels in the diagram below contain equal amounts of different types of soils labelled K, L and M. Equal volumes of water were poured onto each soil at the same time and allowed to drain for 20 minutes.

Study the diagram and answer the questions that follow

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(i) What is the aim of the experiment?
(ii) Which soil has the highest rate of drainage?
(iii) Which soil has the highest water retention capacity?
(iv) Which soil is most likely to lose water and dry faster after rainfall?
(v) Which soil is most likely to be waterlogged after rainfall?
(vi) Which of the soil types would be suitable for maize cultivation?

(b) The diagram below illustrates hazard symbols labelled I, II, III and IV.
Study the diagram carefully and answer the questions that follow.

2016-Integrated-Science-paper-2-question-1b-image

(i) What does each of the symbols labelled I, II, III and IV represent?
(ii) Name one substance each that is associated with:
(α) I;
(β) II;
(γ) III.

(iii) Name a place where the hazard symbol labelled IV is often displayed
(iv) Which of the symbol(s) is / are found on chemical containers?

C. The diagrams below are illustrations of devices used to do work easily
Study the diagrams and answer the questions that follow
2016-Integrated-Science-paper-2-question-1c-image

(i) Give a general name for the devices.
(ii) Identify each of the devices labelled A, B, C and D.
(iii) Name the parts labelled I, II and III of device A when it is considered as a lever.

(iv) What does the arrow represent in the device labelled B?
(v) Name the type of work done with each of the devices labelled:

(α) C;
(β) D;

(d) The diagram below illustrates the digestive system in humans.

Study the diagram carefully and answer the questions that follow

 
2016-Integrated-Science-paper-2-question-1d-image

(i) Name each of the parts labelled I, II, III, IV and V
(ii) Name the part(s) of the digestive system where
(α) digestion of food substances occur
(β) digested food is absorbed into the bloodstream
(iii) Name the end-products of the digestion that is absorbed into the bloodstream

1(a) (i) The aim of the experiment – To determine the drainage ability / water-holding capacity of the soils

(ii) Soil with the highest rate of drainage – Soil K

(iii) Soil with the highest water retention capacity – Soil M

(iv) The soil most likely to lose water and dry faster after rainfall – Soil K

(v) The soil most likely to be waterlogged after rainfall – Soil M

(vi) Which of the soil types would be suitable for maize cultivation – Soil L

1 (b) (i) What each of the symbols labelled I, II, III and IV represent
I – Danger
II – Corrosive
III – Highly inflammable / highly flammable
IV – No naked flame

(ii) One substance each that is associated with:
(α) I; DDT, Hydrogen cyanide, Salicylic acid
(β) II; Concentrated Inorganic acids, such as HCl, H2SO4, HNO3,
Concentrated inorganic bases, such as NaOH, KOH, Ca(OH)2
Household bleach
(γ) III. Petrol, Kerosene, LPG, Perfume, Insecticides, Alcohol [3 marks]

(iii) A place where the hazard symbol labelled IV is often displayed
Gas Filling stations, Storage places of combustible substances

(iv) Symbol(s) found on chemical containers
I, II and III

1(c) (i) General name for the devices.
Simple machines

(ii) Identification of each of the devices labelled A, B, C and D.
A – Wheel barrow
B – Inclined plane
C – Pulley
D – Gear

(iii) The parts labelled I, II and III of device A when it is considered as a lever.

I – Effort
II – Load
III – Pivot

(iv) What the arrow represents in the device labelled B
Direction of effort / effort distance

(v) The type of work done with each of the devices labelled:

(α) C; Lifting objects

(β) D; moving a vehicle or parts of an engine efficiently

1(d) (i) Names of the parts labelled I, II, III, IV and V
I – Stomach
II – Small intestines
III – Large intestines
IV – Rectum
V – Oesophagus / gullet

(ii) The part(s) of the digestive system where
(α) digestion of food substances occur
I and II
(β) digested food is absorbed into the bloodstream
II

(iii) The end-products of the digestion that is absorbed into the bloodstream

Amino acids, glucose, fatty acids and glycerol

2

(a) Name four weather measuring instruments.

(b) Name the stages in the life cycle of a mosquito.

(c) (i) List two properties of water
(ii) Explain why it is advisable to wash clothes with soft water

(d) State three ways in which soil profile is important.

2. (a) Four weather measuring instruments.
Barometer, rain gauge, anemometer, wind vane, hygrometer, sun dial / lightmeter

(b) The stages in the life cycle of a mosquito.
Egg stage, larva stage, pupa stage and adult stage

(c) (i) Two properties of water
• Colourless
• Odourless
• Tasteless
• Boils at 100°C
• Freezes at 0°C

(ii) Why it is advisable to wash clothes with soft water
It lathers better with soap, since it does not contain dissolved salts such as calcium carbonate, magnesium hydroxide and calcium sulphate.
There is no production of scum, therefore it makes washing easier and faster.

(d) Three ways in which soil profile is important.
• to determine the type of crop to grow
• to determine the most suitable farming system to use
• to determine the type / amount of fertilizer needed
• to determine the cultural practices to use
• to determine the type of tools / equipment to use
• to determine the cost of production

3

(a) List three modes of heat transfer.

(b) (i) What is a deficiency disease?
(ii) Name three deficiency diseases in humans.

(c) State two ways in which each of the following factors cause depletion of soil resources:
(i) burning
(ii) leaching

(d) List three processes that can change matter from one state to another.

(a) (i) It is a proton donor
OR
A substance or compound that produces excess hydrogen ion (H+) in water
OR
A substance that contains replaceable hydrogen

(ii)

 

Acid

Base

Taste

Sour

Bitter

Feel

Non slippery / stinging

Slippery / soapy

(b) (i) It is the force acting (normally) per unit area
OR
Pressure = F/A .
where F = Force
A = Area

(ii) Pressure = F/A
= 200 / 50
= 4 Pa OR 4 Nm–2

(c) (i) Unicellular –
(Very small) living organisms that consist of only one cell.

(ii) Multicellular –
(Large) living organisms that consist of (many) cells

(d) It enhances the absorption of mineral salts / nutrients by plant roots
 It enhances the absorption of water by plant roots
 It makes oxygen available for seed germination
 Presence of aeration prevents the formation of toxic / acidic substances in the soil by micro organisms.
 Plant roots use soil air for respiration / metabolism / growth
 Soil micro organisms use soil air for respiration
 Air is required for the decomposition of organic matter.
 Aeration is required to prevent development of plant diseases

4

(a) (i) What is a satellite?
(ii) Give three uses of artificial satellites.

(b) State the composition of each of the following alloys:
(i) brass
(ii) steel
(iv) bronze

(c) Name three cultural practices used in vegetable production.

(d) List four parts of the respiratory system in humans.

4. (a) (i) What a satellite is.
A body that moves around / orbits a planet

(ii) Three uses of artificial satellites.
 weather forecasting
 communication
 scientific exploration
 Navigation – using GPS, etc.
 television/ radio broadcast
 military purposes

(b) The composition of each of the following alloys:
(i) brass
copper and zinc

(ii) steel
iron and carbon

(iii) bronze
copper and tin

(c) Three cultural practices used in vegetable production.
 Weeding
 Pruning
 Mulching
 Watering
 Thinning out
 Staking

(d) Four parts of the respiratory system in humans.
Nostril, bronchus, bronchioles, alveoli, trachea, pharynx, blood capillaries

5

(a) (i) What is a force?
(ii) State two ways in which forces could affect a body

(b) (i) What is a chemical change?
(ii) State three differences between chemical change and physical change.

(c) Name three physical properties of soil.

(d) Mention three diseases of the circulatory system in humans.

5. (a) (i) What a force is
A push or pull on an object

(ii) Two ways in which forces could affect a body
A force can:
 cause a stationery body to move
 cause a moving body to stop
 increase the speed of a moving body (acceleration)
 decrease the speed of a moving body (deceleration)
 change the shape of a body

(b) (i) What a chemical change is
A change in which a new substance is formed and is irreversible, eg, the neutralization reaction between HCl and NaOH

(ii) Three differences between chemical change and physical change.

CHEMICAL CHANGE

PHYSICAL CHANGE

A new substance is formed

No new substance is formed

It is irreversible (not reversible)

It is usually reversible

Heat energy is given off or absorbed

No heat energy given off or absorbed

Chemical bonds are broken and new ones form

Chemical bonds are not broken and no new ones are formed

(c) Three physical properties of soil.
 Soil Texture,
 Soil Structure,
 Water-holding capacity/ permeability / porosity
 Soil colour
 Bulk density
 Soil temperature
 Soil Consistency / Soil strength

(d) Three diseases of the circulatory system in humans.
 Anaemia
 Haemophilia
 Coronary artery disease
 Arteriosclerosis
 Leukemia
 stroke
 hypertension
 heart failure
 heart attack
 Aortic dissection
 Cardiomyopathy, etc

6

(a) Write the systematic name for each of the following compounds:
(i) H2O
(ii) MgO
(iii) CaO
(iv) CaCl2

(b) Name the instrument used in measuring the following:
(i) length of a rope
(ii) mass of a stone
(iii) temperature of a liquid
(iv) volume of a liquid

(c) List three factors that influence vegetable crop production.

(d) Name four stages in the life cycle of a flowering plant.

6. (a) The systematic name for each of the following compounds:
(i) H2O – Dihydrogen monoxide or hydrogen oxide
(ii) MgO – Magnesium oxide
(iii) CaO – Calcium oxide
(iv) CaCl2 – Calcium chloride [4 marks]

(b) The instrument used in measuring the following:
(i) length of a rope –
Metre rule or tape measure
(ii) mass of a stone –
Beam balance, triple beam balance,
(iii) temperature of a liquid-
Mercury-in-glass thermometer, alcohol thermometer
(iv) volume of a liquid –
Measuring/graduated cylinder, beaker, pipette, volumetric flask, measuring cup/jug
[4 marks]

(c) Three factors that influence vegetable crop production.
 Site selection
 Quality of crop variety /planting material
 Nature of soil
 Climate / weather conditions
 Cultural practices
 Harvesting
 Storage
 Marketing

(d) Four stages in the life cycle of a flowering plant.
 Germination
 Seedling
 Mature plant
 Flowering
 Pollination
 Fertilization
 Formation of seeds and fruits
 Dispersal of seeds and fruits

End Of Paper

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