Science — Annual Final Practice Paper

Instructions

• This paper has three sections: Physics (A), Chemistry (B), Biology (C).
• Each section carries equal marks (33–34 marks).
• Diagrams should be drawn in pencil where required.

Section A — Physics

1. State Newton's three laws of motion. (6 marks)
2. A car accelerates from rest to 20 m/s in 8 seconds. Calculate its acceleration. (4 marks)
3. Explain the difference between speed and velocity with an example. (4 marks)
4. Draw and label a simple circuit containing a battery, switch, and two bulbs in series. (6 marks)
5. Define power and state its SI unit. Calculate the power of a machine that does 500 J of work in 10 seconds. (6 marks)

Section B — Chemistry

6. Define an element, a compound, and a mixture, giving one example of each. (6 marks)
7. Balance the equation: Fe + O₂ → Fe₂O₃ (3 marks)
8. Explain the difference between physical and chemical changes with two examples each. (6 marks)
9. Describe the arrangement of particles in solids, liquids, and gases. (6 marks)
10. What is the pH scale used for? State whether a solution with pH 3 is acidic, neutral, or basic. (4 marks)

Section C — Biology

11. List four organelles found in a plant cell but not in an animal cell. (4 marks)
12. Describe the process of photosynthesis, including the word equation. (6 marks)
13. Explain the function of red blood cells, white blood cells, and platelets. (6 marks)
14. Describe one adaptation each in a desert plant and an aquatic animal. (4 marks)
15. Explain why diffusion is important for gas exchange in the lungs. (4 marks)

Notes for revision

Topics most frequently tested across past annual finals: Newton's laws, balancing chemical equations, and the structure/function of blood cells. Prioritize these if revision time is limited.