SOLAF SPS 2014JILID 1

Module 1: Controlling Variables Answer Scheme

1. (a) i. Distance of light source from object ii Size of shadow

2. i. Number of seedlingsii. Average height of seedlings iii. amounts of garden soil / amount of water / type of seedling / type of soil / initial height of seedling

3. i. Number of miceii. Average mass of the miceiii. Size of cage / number of male and female mice/ amount of food and water

4. i. Type of test / number of pupils / age of pupilsii. Time taken to complete the test iii .The ability of the pupils (to complete the mathematics test)

5. a) Type of wood/size of wood/time taken to chop the woodb) i. Width of the back of the blade ii. Number of wooden block chopped in 30 minutes

6. i. Week / number of weeks / Number of snake ii. Number of snake / Number of rats iii. A place of investigation / the type of habitat / the initial number of snakes and rats

7. i. height of objects ii. Mass that can be supported

8. Volume of water/type of water - Time - Water temperature

9. i. Year ii. Area of forest cleared

10. i. Size of base area ii. Material used to make model / height of the model

11. a) i. Presence of food ii. Condition of rats b) Number of rats / presence of water / presence of air / Type of animal

SOLAF SPS 2014JILID 1

12 i. presence of sunlight ii. Condition of the plant iii.Type of plants / type of soil / size of plant / size of the pots

13. a) Place of investigation b) Size of the Moon

14. i.Type of liquid ii.Time taken for the liquid to flow

15 i. Height of the modelsii. Base area of the models / type of material / shape of the modeliii. Time taken for the model to topple over

16. i. Number of young plants in the potii. Height of plants / size of leaves / size of stem / Condition of the plantsiii.Type of plants / size of the pot / type of soil

17. Number of the spring is wound Time taken

18 i. Mass of the ballii. Distance the wooden block moves

19. i. Type of liquid ii. Changes of the colour of the litmus paper

20. i. Type of ruler / material used to make the rulerii. Ability to brake the ruler

21. i. Harvesting method ii. Land size of harvesting

22. i Nnumber of pulley ii. The weight of object that can be lifted

23. i. Week ii. Number of black patches iii Type of bread / place the bread is kept / time taken to keep the bread

24. a) i. Distance of fulcrum from the load ii Ability to move the load. b) Length of the stick / Mass of the load / Size of the man / Size of the load

SOLAF SPS 2014JILID 1

25 i. Distance of planets from the Sun ii. Temperature of the planets