Primary 5 Basic Science First Term Examination

PRIMARY 5 BASIC SCIENCE – FIRST TERM EXAMINATION

Time: 1 Hour 30 Minutes  Marks: 100

Section A – Objective (40 marks)

Answer all questions. Each question carries 2 marks.

1. Which of these shows a healthy environment? (a) Dirty gutter (b) Clean surroundings (c) Bush burning (d) Smoke everywhere
2. Which of these is an example of degraded environment? (a) Clean air (b) Open refuse dump (c) Green grass (d) Neat classroom
3. One advantage of a healthy environment is ____ (a) It causes sickness (b) It makes us happy and safe (c) It brings bad smell (d) It kills plants
4. Which of these is a cause of air pollution? (a) Planting trees (b) Smoke from cars (c) Sweeping the floor (d) Washing clothes
5. Refuse means ____ (a) Books and pens (b) Waste materials (c) Healthy food (d) Fresh water
6. Which of these is biodegradable waste? (a) Nylon bag (b) Banana peel (c) Plastic bottle (d) Iron rod
7. Non-biodegradable waste is ____ (a) Grass (b) Wood (c) Glass bottle (d) Bread
8. Which of these is a natural resource? (a) Petrol (b) Plastic chair (c) Nylon bag (d) Chalkboard
9. Water is important because ____ (a) We use it for drinking (b) We cannot use it (c) It makes us sick (d) It is waste
10. The air we breathe in contains mainly ____ (a) Carbon dioxide (b) Oxygen (c) Smoke (d) Dust
11. Which gas do plants give out during photosynthesis? (a) Nitrogen (b) Oxygen (c) Smoke (d) Carbon dioxide
12. A harmful effect of water pollution is ____ (a) Clean water to drink (b) Fish dying in rivers (c) Healthy swimming pool (d) Safe cooking water
13. Soil erosion can be caused by ____ (a) Planting trees (b) Heavy rainfall (c) Building terraces (d) Mulching
14. Which of these controls erosion? (a) Cutting down trees (b) Planting cover crops (c) Burning bushes (d) Removing topsoil
15. An earthquake is ____ (a) Shaking of the earth (b) Heavy rainfall (c) Strong wind (d) Fire outbreak
16. Which of these is a natural disaster? (a) Festival (b) Flood (c) Wedding (d) Birthday party
17. A landslide means ____ (a) Water moving fast (b) Rocks and soil sliding down (c) Fire in the bush (d) Building collapse
18. Remains of old plants and animals are called ____ (a) Fossils (b) Flood (c) Erosion (d) Waste
19. Which of these is an extinct animal? (a) Goat (b) Cow (c) Dinosaur (d) Dog
20. Which of these helps to conserve natural resources? (a) Wasting water (b) Burning trees (c) Planting trees (d) Throwing refuse in rivers

Section B – Theory (60 marks)

Answer any six questions. Each question carries 10 marks (5 marks for a, 5 marks for b).

1a. State two advantages of a healthy environment.
1b. Mention two disadvantages of a dirty environment.

2a. List three causes of air pollution.
2b. State two harmful effects of air pollution.

3a. Mention three examples of biodegradable waste.
3b. List three examples of non-biodegradable waste.

4a. State three importance of water.
4b. Write two uses of air to living things.

5a. Mention two causes of soil erosion.
5b. State two simple ways of controlling soil erosion.

6a. List two examples of natural disasters.
6b. State two harmful effects of flood.

7a. Write two uses of fossils to man.
7b. Mention two animals that are extinct.

8a. State two reasons why we must conserve natural resources.
8b. Mention two ways of conserving water.