Likely Integrated Science Questions and Answer For BECE 2021 Candidates – Theory

Likely Integrated Science Questions and Answer For BECE 2021 Candidates – Theory: Find below some selected integrated questions for your studies.

As you prepare to write the 2021 BECE waec on the 18th of November 2021, it’s our hope and prayers that you meet all the questions that you’ve studied.

Please you can only make a good grade if you put in the work by learning hard and smart. Make sure to go through these questions and also read your notes along. Good Luck!

Question 1

(a) In an experiment, four nails 1, 2, 3, and 4 are fixed with candle wax onto a metal bar and one end of the bar is heated by means of boiling water as shown in the diagram below.

(b)

A, B, C, D are thermometers inserted in holes along the bar to measure the temperatures at the
various points.

(i) What is the temperature of the boiling water?

(ii) State the observations that will be made about nails 1, 2, 3 and 4

(iii) State the observations that will be made about the temperatures recorded by thermometers A, B, C, and D.

(iv) What mode of heat transfer is demonstrated in the experiment

(v) State one effect of heat that is associated with the experiment

(vi) State the aim of the experiment

 

Question 2

 

(a) Explain each of the following observations in nature:

(i) In the depths of the ocean where it is always dark, there are no green plants.

(ii) On an island where there are no insects and birds, the pawpaw plant produces only flowers but no fruits

(b) Describe how soil is formed.
(c) (i) State the laws of reflection
(ii) Draw a labelled diagram to show the reflection of light on a plane mirror.

Question 3.

 

(a) A child is found not to be able to see at night

(i) What deficiency disease may the child be suffering from?
(ii) What food nutrient is the child lacking?
(iii) List two sources of food substances that can provide the nutrient the
child lacks.

(b) (i) What is an atom?

(ii) Name the components of an atom which determines each of the
following quantities.
(a) mass of an atom
(ß) charge of an atom
(iii) Why is an atom electrically neutral?
3(c) (i) What is friction?
(ii) Give two bad effects of friction.
(iii) Give two situations where friction is an advantage

Question4

(a) (i) Explain heredity
(ii) Give two examples of heredity characters

(b) Explain whether each of the following processes is a chemical change or a physical change:
(i) Rusting;
(ii) Burning;
(iii) Filtration;
(iv) Expansion of copper

(c) (i) What is a simple machine?
(ii) Name two types of simple machines
(iii) Explain why the efficiency of a machine cannot be equal to 100%

 

Question 5

(a) Study the organisms listed below: Earthworm; Sheep; Cassava plant; Grasshopper; Man; Hen.

Draw a food chain using four of the organisms

(b) (i) Name four types of forces apart from friction.
(ii) Give three effects of a force

(c) A certain pupil in a classroom can see clearly on the blackboard only when he sits at the front.

(i) State the eye defect the child is suffering from.
(ii) Explain why the child is unable to see when he is far from the blackboard.
(iii) How can the defect be corrected?