Level: JHS, Basic 7 | Subject: Integrated Science | Strand: Forces and Energy | Topic: Force and Motion
Read the summary notes first, then try these questions. Go back to the summary notes for this topic.
Part A has 20 tick-box questions. Part B has 5 essay questions with a marking guide at the bottom.
Test Yourself: 20 Objective Questions
Tick one answer for each question, then press Review answer. If your answer is wrong, it will be marked first, then the correct answer will show in green.
1. A force is a
2. The unit of force is the
3. An instrument used to measure force is a
4. The force that pulls objects towards the Earth is
5. The force that opposes motion between two surfaces is
6. Friction can be reduced by
7. Which of these is a USEFUL effect of friction?
8. Inertia is the tendency of an object to
9. Newton's first law says that an object stays at rest or moves at constant speed in a straight line unless
10. Passengers lean forward when a tro-tro brakes suddenly because of
11. Which object has the most inertia?
12. Seat belts are used in cars to
13. A magnet attracts
14. Which of these is NOT a magnetic material?
15. The parts of a magnet where the pull is strongest are called
16. When two like poles are brought together, they
17. When a north pole is brought near a south pole, they
18. A freely hanging bar magnet comes to rest pointing
19. Which instrument uses a magnet to show direction?
20. To keep magnets strong, you should NOT
Essay Questions
- (a) Define force. (b) State the unit of force and the instrument used to measure it. (c) Name three effects of a force on an object. (6 marks)
- Explain two advantages and two disadvantages of friction. (4 marks)
- (a) What is inertia? (b) State Newton’s first law of motion. (c) Explain why passengers should wear seat belts. (6 marks)
- List four uses of magnets and state two ways of caring for magnets. (6 marks)
- Describe an activity to show that like poles repel and unlike poles attract. (4 marks)
Essay Questions: Marking Guide for Teachers and Parents
- (a) A push or a pull (1). (b) Newton (1); spring balance or newton meter (1). (c) Any three: start motion, stop motion, change speed, change direction, change shape (1 mark each).
- Advantages (any two): lets us walk, helps brakes work, holds nails in wood (1 mark each). Disadvantages (any two): wears out parts, wastes energy as heat, slows movement (1 mark each).
- (a) The tendency of an object to resist a change in its state of rest or motion (2). (b) An object stays at rest, or moves at constant speed in a straight line, unless an unbalanced force acts on it (2). (c) In a sudden stop, bodies tend to keep moving forward, and the seat belt holds them back (2).
- Any four uses: compass, door catch, electric bell, speaker, separating iron from waste, fridge door (1 mark each, total 4). Care (any two): do not drop, do not heat, keep away from phones and cards, store in pairs (1 mark each, total 2).
- Hang a bar magnet on a string or place it on a float (1). Bring the north pole of a second magnet near the north pole of the first, and the hanging magnet moves away (1). Bring the north pole near the south pole, and it moves towards it (1). This shows like poles repel and unlike poles attract (1).
Education Always (education.inspiringalways.com). Original practice questions, not official WAEC or BECE questions.
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