BECE 1990 Integrated Science Paper 2

 

BECE PAST QUESTIONS AND ANSWERS

BECE 1990 INTEGRATED SCIENCE

Essay - Paper 2

1. (a) Define the following terms and give one example of each:

            (i) Compound

            (ii) Mixture

            (iii) Element

            (iv) Solute


(b) What energy changes take place in the following processes?

        (i) A mango drops from a tree.

        (ii) A carpenter hits a nail with a hammer.

        (iii) A torch is switched on.


(c) (i) Draw a well labeled diagram of a flower

     (ii) Of what importance is the flower to the plant?


(d) Name the sense organs and state one function of each.


2. (a) (i) What is soil erosion? Give two types of soil erosion.

         (ii) Give three activities of man that can cause soil erosion.

        (iii) List three ways by which soil can be conserved.



(b) (i) What is a lever?

    (ii) Classify the following under first class, second class and third class levers. 

Sugar tong, Bottle opener, Paper cutter A pair of scissors Fishing rod, Claw hammer


(c) In each of the following activities, state whether the changes that occurred are:

    (i) physical or chemical

    (ii) reversible or irreversible

            (α) Some boiled cassava and plantain were pounded together into fufu.

            (β) A piece of ice block is put in a cup. After a while, it is found out that the block had changed into a liquid

            (γ) A clean piece of nail was put into a beaker of water. After five days it was observed that the colour of the nail had changed.


3. (a) For each of the following diseases, name the causative organism and one method of prevention.

            (i) Cholera

            (ii) Bilharzia

            (iii) Malaria

            (iv) Tuberculosis


(b) Show how you would separate each of the following mixtures:

        (i) Common salt and sand

        (ii) Muddy water

 (c) Explain why the planet and their moons move around the sun but they do not clash.

(d) Give two uses of the sun’s energy in everyday life.


4. (a) (i) What is pollution?

        (ii) Name two types of pollution. For each type, give one pollutant and its source.


(b) (i) Explain the term vegetative reproduction.

    (ii) Give any two examples of plants that reproduce vegetatively.


(c) (i) List the parts of an atom and show the electrical charges of each of the parts.

     (ii) Explain the term work.

    (iii) Distinguish between heat and temperature and give their units

You Might Also Like

bece past questions and answers

bece past questions