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BECEzone

THE WEST AFRICAN EXAMINATIONS COUNCIL GHANA

Basic Education Certificate Examination

Integrated Science 2002

OBJECTIVE TEST

Objective Test

Question 1

Which of the following substances is made up of only one kind of atom?

Question 2

Ice is able to float on water because the ice is

Question 3

Question 3 diagram
Which of the following statements about the state of matter is correct?

Question 4

The above diagram illustrates the structure of an atom. The components labeled X and Y are respectively

Question 5

The force which opposes the motion of one object on another object is known as

Question 6

When the brakes of a bicycle in motion are applied for a long time the wheels become hot. This is because of a change of energy from

Question 7

A man applied a force of 50 N to push a wheelbarrow through a distance of 6 m. Calculate the work done.

Question 8

In which of the following situations is work said to be done?

Question 9

The energy stored in food is

Question 10

Question 10 diagram
A machine which has an energy loss of 10% will have an efficiency of The figure below shows a simple electric circuit.Use it to answer questions 11 to 13

Question 11

The switch is represented by

Question 12

The component labeled V is a/an

Question 13

The purpose of the component labeled IV is to

Question 14

Which of the following diseases is spread by a mosquito?

Question 15

Question 15 diagram
The intermediate host of the worm that causes Bilharzia is Use the diagram below to answer question 16 and 17

Question 16

The function of the part labeled IV is to enable the fish to

Question 17

The part labeled V is used for

Question 18

Which of the following arrangements is a probable food chain?

Question 19

One disease which can be transmitted through eating half cooked meat is

Question 20

Which of the following characteristics are common to all living things? I. Response to stimuli II. Respiration III. Movement from place to place IV. Growth

Question 21

The part of sugar cane that is usually used for planting is the

Question 22

Excess carbohydrate in the human body is stored as

Question 23

Carbon dioxide in the blood is removed from the body through the

Question 24

The end-product of protein digestion is

Question 25

The liquid component of the blood is known as

Question 26

Digested food substances are absorbed into the bloodstream in the

Question 27

The part of the human ear which collects and directs sound waves is the

Question 28

The process by which waste substances are removed from the body is called

Question 29

The embryo of a mammal develops from

Question 30

Which of the following gases is given out during photosynthesis?

Question 31

The component of the soil which is made up of the finest particles is

Question 32

The soil type which is able to retain the highest amount of water is

Question 33

The formation of humus is aided by

Question 34

The major cause of pollution at a stone quarry is

Question 35

Ringworm is a skin disease, which is caused by

Question 36

Which of the following habits will help in the control of diseases contracted through air? I. Not throwing human waste into rivers II. Washing of hands after visiting the toilet III. Not spitting about in public places IV. Keeping foods always covered

Question 37

Soup which is not well-heated gets spoilt when kept for some time because the

Question 38

The measure of the amount of water vapor in the air is known as

Question 39

Which of the following heavenly bodies is a star?

Question 40

The planet in our solar system which has the largest orbit is

THEORY

ESSAY

Answer three questions only from this section. Illustrate your answers wherever possible, with large, clear and fully labelled diagrams. Credit will be given for clarity of expression and orderly presentation of material. All questions carry equal marks

Question 1

(a). Classify each of the following substances as colloids, suspension or solution: Smoke, breast milk, powdered milk in water, sea water, mist, steel. (b). (i) Define valency (ii) State the valencies of the following elements and radicals: (α) Iron (β) Zinc (γ) Hydroxyl (λ) Carbonate (c). Give one difference between plants and animals in terms of (i) feeding (ii) excretion (iii) sensitivity (d). (i) Draw and label a diagram to show how an image is formed in a pinhole camera. (ii) State the characteristics of the image formed.

Question 2

(a) State three differences between molecules in a solid state and liquid state. (b). (i) What is a solution? (ii) Difference 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 (e). (i) What is a man-made satellite? (ii) Give two examples of natural satellites. (iii) Mention two applications of man-made satellites

Question 3

(a) Name the four main parts of a flower. (b) Give two external features of plants pollinated by wind. (c) Construct a food chain using any four of the organisms listed below. Goat, lizard, bird, snake, earthworm, grasscutter, grass, ant, cassava (d) (i) The energy input of a machine is 7.5 J and the output energy is 5.0 J. Calculate the efficiency of the machine. (ii) Explain why the efficiency of a machine is always less than 1

Question 4

(a) (i) What is an embryo? (ii) Where does an embryo develop in the female mammal? (iii) Describe briefly how a developing embryo breathes in oxygen. (b) Name three plant nutrients (c). (i) What is an electrical insulator? (ii) Explain how a comb rubbed vigorously on dry hair attracts small pieces of paper. (d) (i) List the chemical substances that are used in the preparation of ammonia gas in the laboratory. (ii) Write down balanced chemical equation for the reaction.

PART I [40 marks]

Answer all of Question 1

Questions for this section are in the printed paper.