Examination on Basic Science
Class: Primary 3
Term: Second Term
Time: 1 Hour
Total Marks: 70

SECTION A: OBJECTIVES (40 Marks)
Instruction: Answer all questions.

1. ________ is the ability of living things to respond to changes in their environment. (a) Growth (b) Irritability (c) Nutrition
2. Developed technology often uses complex tools and ________. (a) simple ideas (b) machines (c) manual labour
3. Which of the following is a characteristic of all living things? (a) Flying (b) Reproduction (c) Talking
4. A living thing increases in size through a process called ________. (a) movement (b) reproduction (c) growth
5. All of these are forms of energy except ________. (a) light (b) heat (c) water
6. Which of these is NOT a source of electrical energy? (a) Generator (b) Battery (c) Sun
7. The main reason plants need sunlight is for ________. (a) warmth (b) food production (c) attracting insects
8. The correct step in using a solar panel is to place it where it can get direct ________. (a) rain (b) sunlight (c) wind
9. Which of these is not a product of underdeveloped technology? (a) Mortar and pestle (b) Hand hoe (c) Laptop
10. Animals move from one place to another mainly to search for ________ and shelter. (a) friends (b) food (c) water
11. A car moving is an example of conversion of chemical energy to ________ energy. (a) light (b) sound (c) mechanical
12. The process by which living things give birth to young ones is called ________. (a) excretion (b) reproduction (c) respiration
13. Which of the following is an example of developed technology? (a) Grinding stone (b) Computer (c) Clay pot
14. Underdeveloped technology usually depends on ________ power. (a) human (b) electric (c) solar
15. ________ is the capacity to do work. (a) Force (b) Energy (c) Power
16. Which of these is a characteristic of plants? (a) They cannot make their own food. (b) They grow towards light. (c) They move from place to place.
17. The energy from the sun is called ________ energy. (a) electrical (b) chemical (c) solar
18. A battery stores ________ energy. (a) light (b) chemical (c) heat
19. Which of these shows that animals are living things? (a) They eat food. (b) They are made of plastic. (c) They do not grow.
20. Burning wood produces light and ________. (a) water (b) sound (c) heat

SECTION B: THEORY (30 Marks)
Instruction: Answer any THREE questions.

1. (a) Define a living thing. (2 marks)
(b) List three characteristics of living things. (3 marks)
(c) Give two examples of how plants show movement. (3 marks)
(d) State one way animals are different from plants. (2 marks)

2. (a) What is technology? (2 marks)
(b) Give two differences between developed and underdeveloped technology. (3 marks)
(c) List two products of developed technology and their uses. (3 marks)
(d) Name two products of underdeveloped technology. (2 marks)

3. (a) What is energy? (2 marks)
(b) List three forms of energy. (3 marks)
(c) Explain how electrical energy is useful in our homes. (3 marks)
(d) State one source of chemical energy. (2 marks)

4. (a) Name two sources of light. (2 marks)
(b) Explain the difference between light and fire. (3 marks)
(c) Give two examples of energy conversion in everyday life. (3 marks)
(d) Identify one technology that uses energy conversion. (2 marks)

Objective Marking Scheme

Question 1 – ✅ (b) Irritability
Question 2 – ✅ (b) machines
Question 3 – ✅ (b) Reproduction
Question 4 – ✅ (c) growth
Question 5 – ✅ (c) water
Question 6 – ✅ (c) Sun
Question 7 – ✅ (b) food production
Question 8 – ✅ (b) sunlight
Question 9 – ✅ (c) Laptop
Question 10 – ✅ (b) food
Question 11 – ✅ (c) mechanical
Question 12 – ✅ (b) reproduction
Question 13 – ✅ (b) Computer
Question 14 – ✅ (a) human
Question 15 – ✅ (b) Energy
Question 16 – ✅ (b) They grow towards light.
Question 17 – ✅ (c) solar
Question 18 – ✅ (b) chemical
Question 19 – ✅ (a) They eat food.
Question 20 – ✅ (c) heat