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BECEzone

THE WEST AFRICAN EXAMINATIONS COUNCIL GHANA

Basic Education Certificate Examination

Integrated Science 2003

OBJECTIVE TEST

Objective Test

Question 1

The method used to separate an insoluble solid from a liquid is

Question 2

The scent of a perfume sprayed at one corner of a room fills the entire room through

Question 3

Which of the following processes is a physical change?

Question 4

Atoms of the same element have the same I. number of electrons II. number of protons III. chemical properties Which of the above statements are true?

Question 5

The unit of measurement of energy is

Question 6

Which of the following energy transformations takes place at a hydroelectric power station?

Question 7

A drawing of magnetic lines of force provides information on the

Question 8

A bottle of water removed from a refrigerator soon becomes covered with droplets of water because the

Question 9

The volume of a metal ball was determined by dropping it into a measuring cylinder containing 20 cm³ of water and the water level rose to 35 cm³. If the mass of the ball is 35 g, calculate its density.

Question 10

A boy stepped on a banana peel on the ground and fell because the

Question 11

Which of the following conditions describes a first class lever?

Question 12

A man did 75 J of work by lifting a 50 N load from the floor onto a shelf. Calculate the height of the shelf.

Question 13

The lion is a carnivore because it eats

Question 14

The structure which helps a fish to breathe underwater is the

Question 15

The thorns found on some plants are used for

Question 16

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

Question 17

Which of the following parasites lives on field animals?

Question 18

The greatest danger faced by mammals living on land is

Question 19

The insect responsible for the spread of malaria is the

Question 20

Question 20 diagram
Which of the following substances is added to the soil to reduce its acidity? Fig. 1 shows the arrangement of parts of the soil when some soil sample was shaken with water in a glass cylinder and allowed to settle.

Question 21

Which of the labeled layers contains organic matter?

Question 22

The layer which does not have the ability to retain much water is

Question 23

Which of the following characteristics applies to only plants?

Question 24

The waste products of respiration are

Question 25

The function of the lung is to

Question 26

Which of the following plants reproduce(s) vegetatively?

Question 27

The process which takes place in all living cells is

Question 28

The food substance found in yam is

Question 29

The end-products of the digestion of fats and oils are

Question 30

Which of the following factors promote plant germination?

Question 31

The female part of a flower is the

Question 32

Which of the following substances breaks down fats into tiny droplets during digestion?

Question 33

Blood in the urine is a symptom of

Question 34

A free movement of the bowels is aided by

Question 35

Which of the following diseases is spread through the air?

Question 36

How many days in a month does the moon appear?

Question 37

The earth moves completely round the sun once in every

Question 38

A smaller heavenly body, which orbits a bigger one could be described as a

Question 39

Which of the following parasites is a plant?

Question 40

Which of the following substances is not a constituent of a balanced diet?

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) (i) Define photosynthesis (ii) Give two ways in which photosynthesis is important to animals [5 marks] (b) Name three sources of chemical energy [3 marks] (c) Describe how you would separate a mixture of sodium chloride and sand [4 marks] (d) Complete and balance the following chemical reaction: CaCO3 + HCl → [4 marks] (e) Two dry cells, a switch and a bulb are connected in series. Draw and label a circuit diagram of the arrangement [4marks]

Question 2

(a) State two precautions that should be taken to prevent the spread of each of the following diseases: (i) cholera (ii) smallpox [4 marks] (b) Describe how you would test for starch in a leaf. [6 marks] (c) Draw and label the structure of an atom containing three electrons. Indicate the charges of the particles. [6 marks] (d) (i) Explain why an inclined plane is classified as a machine (ii) Give two reasons why the output energy of a machine is always less than the input energy. [4 marks]

Question 3

(a) Name the two processes that lead to the formation of seeds in a flowering plant [2 marks] (b) (i) Give five components of blood (ii) State three functions of blood [8 marks] (c) (i) What is an electrical insulator? (ii) Mention three examples of insulators (iii) Give two characteristics of an insulator that explain its behaviour [7mks] (d) Classify the following substances under the three states of matter: petrol, palm oil, soap, carbon dioxide, corn flour, smoke [3 marks]

Question 4

(a) (i) What is a deficiency disease? (ii) Give two deficiency diseases and their causes. [6 marks] (b) (i) State the importance of excretion in living organisms. (ii) Name two excretory organs of the human body and the substances they excrete. [6 marks] (c) (i) Explain why gases are more compressible than solids. (ii) Give two areas where the compressible nature of a gas is applied [4 marks] (d) A piece of stone is dropped from a height to the ground. State the energies possessed by the stone (i) just before it was released from the maximum point; (ii) midway between the fall; (iii) just before it hit the ground. [4 marks]

PART I [40 marks]

Answer all of Question 1

Questions for this section are in the printed paper.