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Form 4

1. Diagram 3 shows two catapults A and B made from same catapult rubber.Difference forces are applied on the catapults.

A BDiagram 3

Base on the information and observation above:With the use of apparatus such as spring, retort stands and other apparatus,

describe an experiment framework to investigate the hypothesis stated in3(b).

2. Diagram 3.1 shows Jason and Jimmy on a tandem bicycle with Jimmyalone pedaling. They found that the speed of the bicycle increases at aslow rate.

Diagram 3.1 Diagram 3.2

Diagram 3.2 shows that when both Jason and Jimmy are pedaling, the speedof thebicycle increases at a higher rate.Based on the observation on Diagram 3.1and Diagram 3.2 and using your knowledge of the effect of force on motion:With use of apparatus such as trolley, a ticker timer, rubber band and otherapparatus, describe an experiment.

3. Diagram 3.1 shows a car pulling a heavily packed trailer. The trailer isattached to the car with a locking mechanism. The cars engine isexerting a constant force that causes the car and the trailer to acceleratetogether.Diagram 3.2 shows what happens when the locking mechanism fails andthe trailer is dislodged. The car lurches forward with an increased

acceleration on its own.

Diagram 3.2 Diagram 3.1Based on the effect onto the cars acceleration;design an experiment to test the hypothesis, using ticker timer, trolley andothersuitable apparatus.

4. Diagram 3.1 shows a cake before being baked . Diagram 3.2 show cakeafter being baked

Diagram 3.1 Diagram 3.2Cake before being baked Cake after being bakedBased on the information and observation above:With the use of apparatus such as capillary tube with and other apparatus,describe an experiment framework to investigate the hypothesis stated in 3(b).5. Diagram 3.1 shows an inverted beaker contains an air trapped is

converted and immersed in the water. Diagram 3.2 shows the volume ofair trapped in the beaker decreased when the beaker is pushed down inthe water.

Based on your observation on the volume of air trapped in the beaker;(c ) With use of apparatus such as a syringe , thick rubber tube and otherapparatus, describe an experiment to investigate the hypothesis stated in 3(b)

6. Diagram 3.1 shows a worker pushing down on the piston of a clogged

bicycle pump. Diagram 3.2 shows the same worker finding it harder topush the piston further down.

With the use of apparatus such as a Bourdon gauge and the other apparatus,describe an experiment to investigate the hypothesis stated in 3(b).

7. Diagram 3.1(a) shows an enclosed balloon containing 3.0 cm3 of air at atemperature of 2.0 oC in a refrigerator. When the balloon was taken outand placed in room where the temperature was 27.0oC, the air in itexpanded, as shown in diagram 3.1(b).

With the use of apparatus such as a metre rule, thermometer and otherapparatus, describe an experiment framework.

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8. Before going to Johor Bahru, Afiff measures the air pressure of the tyresof his car, as shown in Diagram 3. He noticed that the air pressure one ofthe tyres is 200 kPa. At Johor Bahru, Afiff measured the air pressure. Hefound that the air pressure in tyre has increased to 240 kPa. Afiff alsofound that the tyre become hot after he arrived at Johor Bahru. Howeverthe size of the tyre remains the same.

With the use of apparatus such as Bourdon gauge, a round bottom flask andother apparatus, describe one experiment to investigate the hypothesisstated in Question 3(b).

damwater

Figure 39. Figure 3 shows the cross-section of a dam. The wall has to be thicker at

the bottom of the dam.Based on the above information andobservation:

With the use apparatus such as a measuring cylinder, manometer, rubber

tube and other apparatus, describe an experiment framework to investigateyour hypothesis stated in 3(b).

10. Diagram 3.1 shows a man is in a leaking sampan. He noticed that thespurt coming from the hole at the bottom of the sampan is highercompared to the one from the side.

Based on the above information and observation:With the use of apparatus such as a U tube, thistle funnel, measuringcylinder and the other apparatu, describe an experiment framework toinvestigate the hypothesis stated in 3 (b).

11. Diagram 3.1 shows a diver is diving into the sea. Diagram 3.2 shows adiver is diving into the swimming pool. They are at the same depth butthe diver in Diagram 3.1 feel that his ear was sick.

With the use of apparatus such as thistle funnel, meter ruler and others,describe an experiment framework to investigate the hypothesis stated in 4(b

12. The pressure of water at a depth of 50 m under the sea is greater than thepressure at sea level. Pressure of this magnitude will crush human lungsand even ships unless they are protected by special equipment or madewith special materials.

Using the above information,

design an experiment to investigate your hypothesis stated in (b).Choose suitable apparatus such as a thistle funnel, rubber tube, measuringcylinder and others.

13. A man who is fishing, pulled out a fish out of the water as shown inDiagram 3.1. It becom es more difficult to pull out the fish out of the waterand the rod is getting bender in Diagram 3.2.

With the use of apparatus such as measuring cylinder, spring balance, metalrod and other apparatus, describe an experiment framework to investigate thehypothesis stated in 3(b)

14. Diagram 3.1 shows a boy lifted up a rock in the sea water.Diagram 3.2 shows the boy lifted up the rock at the surface of the seawater. He feel much heavier than before.

Diagram 3.1 (easier to lift rock) Diagram 3.2 (more difficult to lift rock)Base the Diagram 3.1 and 3.2 and your knowledge of buoyant force:

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bottom hole

side hole

50 m

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With the use of apparatus such as weight, beaker, spring balance andothers, describe an experiment framework to investigate the hypothesisstated in 3(b).

15. Diagram 3.1 and Diagram 3.2 show a boat with different load. It isobserved that the boat in Diagram 3.2 sinks more than in Diagram 3.1.

River River

Based on the information and observation above:With the use of apparatus such as slotted masses, beaker and other suitableapparatus, describe an experiment framework to investigate the hypothesisstated in 3 (b). In your description, state clearly the following:

16. Diagram 3.1 shows a half glass of hot coffee that is left for ten minutes.Diagram 3.2 shows a full glass of similar hot coffee that is left for the

same time. It is notice that the hot coffee in Diagram 3.1 cools downfaster than Diagram 3.2.

With the use of apparatus such as immersion heater, beaker and otherapparatus, describe an experiment framework to investigate the hypothesisstated in 3(b).

17. Diagram 3.1 shows two pot,Xand Y, withXcontaining more water thanY. Both the pot are heated. After a few minutes it was observed that thewater in pot Yis hotter than the water in potX.

With the use of apparatus such as beaker, thermometer immersion heaterand other apparatus, describe one experiment to investigate the hypothesisstated in

Question 3(b).

18. Diagram 3.1 shows a boy accidentally spilt a few drops of hot noodle souponto his hand and felt slight pain. Later on, he accidentally spilt the wholebowl of hot noodle soup onto

With the use of apparatus such as power supply, beaker, immersion heater and

other apparatus, describe an experiment to investigate the hypothesis statedin Question 3(b).

19. Figure 3(a) and 3(b) show two similar electric kettles used to boil water.Thepower ratings for the kettles are 240 V, 1000 W. It is found that the waterin the kettle in Figure 3(b) boils faster than the water in the kettle in Figure3(a).

With the use of apparatus such as immersion heater, measuring cylinderand other apparatus, describe an experiment framework to investigate thehypothesis stated in 3 (b)

20. Diagram 3.1 shows a line under a glass block. Diagram 3.2 shows anidentical line under a Perspex block of the same size. An observer noticedthat the image of the line formed in

the glass block is nearer to the surface of the block.

With the use of apparatus such as a tall beaker, water and other apparatus andmaterial, describe one experiment to investigate the hypothesis stated in 3(b).

21. Diagram 3.1 shows a laboratory poster being observed through a convexlens.

Diagram 3.2 shows the laboratory poster observed through the same convexlens when the poster is brought closer to the lens.

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DIAGRAM 3.1 DIAGRAM 3.2

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DIAGRAM 3.1 DIAGRAM 3.2Based on the above information and observation:With the use of apparatus such as a convex lens, a light bulb and otherapparatus, describe an experimental framework to investigate thehypothesis stated in 3(b).

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