Examination on Basic Science
Class: JSS 2
Term: Second Term
Time: 1 Hour
Total Marks: 70

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

1. ________ is defined as the ability to do work. (a) Power (b) Energy (c) Force (d) Motion
2. The S.I. unit of power is the ________. (a) Joule (b) Newton (c) Watt (d) Metre
3. Which of the following forms of energy is primarily associated with motion? (a) Heat energy (b) Potential energy (c) Light energy (d) Kinetic energy
4. All of these are common forms of energy except ________. (a) Sound (b) Chemical (c) Work (d) Electrical
5. The energy possessed by a body due to its position or state is called ________ energy. (a) Kinetic (b) Mechanical (c) Potential (d) Thermal
6. When work is done, there is always a transfer of ________. (a) Force (b) Distance (c) Energy (d) Power
7. Which of these is not a fundamental component of effective communication? (a) Sender (b) Receiver (c) Noise (d) Silence
8. The formula for calculating work done is ________. (a) W = F/d (b) W = F x d (c) W = P/t (d) W = mgh
9. According to the kinetic theory, the particles of a gas are described as ________. (a) closely packed and vibrate (b) loosely packed and slide past each other (c) far apart and move randomly (d) fixed in position and oscillate
10. The process where a liquid changes into vapour without reaching its boiling point is called ________. (a) Condensation (b) Evaporation (c) Melting (d) Freezing
11. ________ is the transfer of information, ideas, or feelings from one person to another. (a) Discussion (b) Communication (c) Interaction (d) Dialogue
12. A car moving on a road primarily possesses ________ energy. (a) Potential (b) Chemical (c) Kinetic (d) Electrical
13. The main reason for open and honest communication about pubertal concerns is to ________. (a) avoid conflict (b) build trust and get support (c) show independence (d) share secrets
14. Which is NOT an assumption of the kinetic theory of matter? (a) Particles are in constant random motion (b) Particles attract each other strongly (c) Particles have negligible volume (d) Collisions between particles are elastic
15. The total period from birth to death is referred to as the ________. (a) Life cycle (b) Life span continuum (c) Life stage (d) Life journey
16. The ability to do work is fundamentally known as ________. (a) Power (b) Energy (c) Force (d) Motion
17. Which of these actions can significantly improve communication between people? (a) Interrupting others (b) Active listening (c) Speaking loudly (d) Avoiding eye contact
18. The energy possessed by a body due to its motion is specifically known as ________ energy. (a) Potential (b) Chemical (c) Kinetic (d) Heat
19. All of these are factors that affect the rate of evaporation except ________. (a) Temperature (b) Surface area (c) Humidity (d) Pressure
20. The force applied to an object multiplied by the distance moved in the direction of the force gives us ________. (a) Power (b) Energy (c) Work done (d) Velocity
21. ________ is the rate at which work is done. (a) Energy (b) Force (c) Power (d) Momentum
22. The internal energy of a substance due to the random motion of its particles is ________ energy. (a) Light (b) Heat (c) Sound (d) Electrical
23. Which of the following is a clear example of energy transfer during work? (a) A ball at rest (b) A book on a shelf (c) Pushing a trolley (d) A sleeping dog
24. The term for how an individual perceives and feels about their physical appearance is ________. (a) Self-esteem (b) Body image (c) Self-worth (d) Personality
25. The process of boiling occurs at a specific ________. (a) Temperature (b) Pressure (c) Volume (d) Height
26. Which of these is not a common and observable way people communicate? (a) Talking (b) Writing (c) Sign language (d) Telekinesis
27. The formula P = W ÷ t represents the calculation for ________. (a) Work done (b) Energy (c) Power (d) Force
28. Which of the following is a characteristic of solids according to the kinetic theory of matter? (a) Particles are far apart (b) Particles slide past each other (c) Particles vibrate in fixed positions (d) Particles move randomly
29. An example of a developmental change during the life span continuum is ________. (a) eating (b) sleeping (c) learning to walk (d) breathing
30. The correct step in calculating power when work and time are given is to ________. (a) multiply work by time (b) divide work by time (c) add work and time (d) subtract time from work
31. The transfer of energy that results in the heating of an object is known as ________ transfer. (a) Mechanical (b) Sound (c) Heat (d) Light
32. What type of energy is stored in a stretched rubber band? (a) Kinetic (b) Chemical (c) Potential (d) Thermal
33. The particles in a liquid are typically ________. (a) fixed in position (b) far apart and move freely (c) loosely packed and can slide past each other (d) not in motion
34. Which of these describes the importance of honest communication with parents about puberty? (a) It encourages secrecy. (b) It helps you avoid difficult discussions. (c) It provides guidance and support. (d) It makes you independent.
35. The concept of work in physics involves both force and ________. (a) speed (b) acceleration (c) displacement (d) time
36. Evaporation takes place ________, while boiling takes place ________. (a) at any temperature; at a specific temperature (b) at a specific temperature; at any temperature (c) only on the surface; throughout the liquid (d) both a and c
37. A factor that influences an individual’s self-worth is ________. (a) external appearance (b) body image (c) academic performance (d) all of the above
38. When a hammer hits a nail, ________ energy is transferred to the nail to do work. (a) sound (b) heat (c) mechanical (d) light
39. Which of these does NOT influence the rate of evaporation? (a) Wind speed (b) Nature of liquid (c) Colour of liquid (d) Humidity
40. The energy possessed by water stored in a dam is primarily ________. (a) kinetic (b) potential (c) heat (d) chemical

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

1. (a) Define work done in physics. (2 marks)
(b) State the formula for calculating power and explain the terms in the formula. (3 marks)
(c) Differentiate between potential energy and kinetic energy. (3 marks)
(d) Give two everyday examples of situations where work is done. (2 marks)

2. (a) What is communication? (2 marks)
(b) List three different ways people communicate. (3 marks)
(c) Explain the importance of open and honest communication with parents regarding pubertal concerns. (3 marks)
(d) State two ways communication can be improved. (2 marks)

3. (a) State two assumptions of the kinetic theory of matter. (2 marks)
(b) Use the kinetic theory to describe the arrangement and movement of particles in a liquid. (3 marks)
(c) Differentiate between evaporation and boiling. (3 marks)
(d)