SECOND TERM EXAMINATION PRIMARY 4 BASIC SCIENCE

SECOND TERM EXAMINATION 

CLASS: PRIMARY 4

SUBJECT: BASIC SCIENCE

NAME:……………………………………………………………………………………

1. Pests are _____ which damage crops by feeding on them (a0 organisms (b) organs (c) cells
2. __________ is a pest of yam (a) aluids (b) insects (c) beetle
3. ________ is a disorder or an abnormality in the system of living things which prevents proper functioning. (a) disease (b) desease (c) deseese
4. There are __________ methods of controlling pests and diseases (a) seven (b) three (c) four
5. The teeth can be found in which part of our body? ____ (a) chest (b) hand (c) mouth
6. There are _____ types of teeth (a) 3 (b) 4 (c) 5
7. The first set of teeth in children is called _____ (a) milk teeth (b) milky teeth (c) millet teeth
8. The _____ is used in biting and cutting of food into pieces (a) carines (b) molars (c) incisors
9. The _____ is used for tasting food. (a) mouth (b) lips (c) tongue
10. The ______ support food into and prevent it from pouring out of the mouth(a) stomach (b) lips (c) hands
11. _____ is the topmost layer of the earth. (a) soil (b) water (c) sky
12. There are ______ types of soil (a) 4 (b) 3 (c) 6
13. ______ is the best soil for planting (a) clayey (b) sandy (c) loamy
14. _____ is a liquid substance which is odourless, tasteless and transparent in its pure and undiluted form (a) water (b) atmosphere (c) sky
15. ______ is a process of a liquid substance gradually changing into its gaseous form(a) evaporation (b) transmission (c) diffusion
16. ______ is described as the process of vapour changing back to water, when it comes in contact with a cooler surface (a) evaporation (b) condensation (c) osmosis
17. ___________ are chemicals used to make water free from bacteria or germs(a) hypo (b) detergents (c) disinfectants
18. There are ____ classes of food (a) 8 (b) 6 (c) 7
19. ______ is a meal which contains all the classes of food in the right proportion (a)meal planning (b) table manner (c) balanced diet
20. _________ are infected foods which make us sick or cause diseases in the body if they are consumed (a) harmful foods (b) hammer food (c) hunger food

Section B:

(1) Mention three causes of diseases

(a) ________________________________ (b) ________________________________

(c) ________________________________

b.) List four common diseases in plants

(a) ________________________________ (b) ________________________________

(c) ________________________________ (d) ________________________________

(2) Explain agents of diseases

b.) List four diseases casual agents in plants

(a) ________________________________ (b) ________________________________

(c) ________________________________ (d) ________________________________

(3) Name the types of teeth

(a) ________________________________ (b) ________________________________

b.) State the uses of each tooth

(4) List the types of soil and state one property of each

b.) Define solvent________________________________________________________________

(5) State three uses of water

(a) ________________________________ (b) ________________________________

(c) ________________________________

b.) Explain purification of water