1. TOPICAL TEST
PRIMARY THREE
SCIENCE
ANSWER KEY
Question SECTION A
1. (1) air
2. (2) jelly
3. (4) They can respond to changes around them.
4. (2)
5. (3)
6. (3) between 100 cm3
to 200 cm3
7. (4)B, C and D only
8. (3) Andrew, Boston and Denise
9. (2)
10. False
True
False
False
11. (a) properties
(b) strong
(c) flexible
(d) hard
12. (a)
i) bread
ii) Carbon dioxide or wind
iii) Carbon dioxide or wind
iv) Hot Chocolate
b)
P: Solid
Q: Gas

2. 13. (a)
water levels in beaker X must be higher than that in beaker Y
water levels in beaker Z must be higher than that in beaker X and Y
Did not use ruler to draw the water level [0 mark]
(b) The bigger / larger (1/2 m) the size of the iron ball, the higher /
increases / more (1/2 m) the water level in the beaker.
Or
The smaller (1/2 m) the size of the iron ball, the lower (1/2 m) the water level
in the beaker.
14. (a) Animal C cannot fly (1/2 m) but Animal E can fly. (1/2 m)
Award marks if pupil compares more than 1 difference.
Animal C cannot fly but Animal E can fly and swim. (1/2 m only because of
additional information -> can swim)
(b)
Duck-billed platypus Monkey
C (1/2 m) B (1/2 m)
15. (a) Steel bar –D
Detergent – A
Sponge – C
Oxygen – B
½ mark each
(b) Substance D has a definite shape(1/2 m)and it is hard(1/2 m).
16. (a) Milk can Y.
(c) More (1/2 m) air enters (1/2 m) milk can Ythrough the holes and pushes
milk (1 m) out of the can through the hole at the bottom.