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Second Term Examination Basic Science Basic 3

CRN INTERNATIONAL SCHOOL

SECOND TERM EXAMINATION 

BASIC 3

SECTION A 

BASIC SCIENCE 

Choose the correct answer from the options.

1. Water is _______________ in nature.

[a] solid

[b] liquid

[c] gas

2. Water is useful to plant and animal.

[a] True

[b] False

[c] Maybe

3. Drinking dirty water can cause ________________.

[a] cough

[b] fever

[c] cholera

4. ________________ lay their eggs on dirty water.

[a] Mosquitoes

[b] Hens

[c] Ducks

5. Contaminated water is safe for ________________.

[a] True

[b] False

[c] Maybe

6. ______________ can contaminate water.

[a] Money

[b] Chemical

[c] Salt

7. Dirty water can ________________ our clothes.

[a] design

[b] stain

[c] beautify

8. Water purification means making water ________________.

[a] pure

[b] anyhow

[c] dirty

9. Clean water makes us ________________.

[a] healthy

[b] sick

[c] weak

10. When petrol spread on water, It is called oil ________________.

[a] Water

[b] Liquid

[c] Spillage

11. ________________ is a chemical used for water purification.

[a] Chlorine

[b] Sweet

[c] Maggi

12. Charcoal is always ________________.

[a] white

[b] black

[c] red

13. Rainbow has ________________ colours.

[a] 2

[b] 10

[c] 7

14. Snow is _______________ in colour.

[a] white

[b] brown

[c] black

15. ________________ is the common colour of leaves.

[a] Brown

[b] Green

[c] Red

SECTION B

Attempt all questions in this section. 

1. Define water purification.

____________________________________________________________

b. List three ways of purifying water:

I. ______________________________

II. ______________________________

III. ______________________________

2. Sketch out the diagram of sedimentation and decantation way of purifying water.

3. Define colour.

____________________________________________________________

b. List 8 colours you know:

I. ______________________________

II. ______________________________

III. ______________________________

IV. ______________________________

V. ______________________________

VI. ______________________________

VII. ______________________________

4, Write the following colours for these objects

a. sky ______________________________

b. board ______________________________

c. wood ______________________________

d. plants ______________________________

e. chalk ______________________________

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