TOPICAL TESTPRIMARY THREE

SCIENCE

ANSWER KEY

Question SECTION A1. (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 only8. (3) Andrew, Boston and Denise9. (2)

10. FalseTrueFalseFalse

11. (a) properties(b) strong(c) flexible(d) hard

12. (a)i) breadii) Carbon dioxide or windiii) Carbon dioxide or windiv) Hot Chocolate

b)

P: SolidQ: Gas

13. (a)

water levels in beaker X must be higher than that in beaker Ywater 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 Y through the holes and pushes milk (1 m) out of the can through the hole at the bottom.