Match the uses of instruments in List A with a correct name of the instrument in List B by writing a letter of the correct response below the item number in the table provided. List A List B () An instrument used to measure density of the liquid. A Density bottle B Hydrometer () An instrument used to determine the volume of Eureka can irregular substance. D Pipette (ii) An instrument used to transfer specific volume E Measuring cylinder of liquid from one container to another. F Burette (iv) An instrument used to determine the volume of G Test tube displaced water. (v) An instrument used to determine the density of insoluble granules.

1. An instrument used to measure density of the liquid. (1 alama)
2. An instrument used to determine the volume of irregular substance. (1 alama)
3. An instrument used to transfer specific volume of liquid from one container to another. (1 alama)
4. An instrument used to determine the volume of displaced water. (1 alama)
5. An instrument used to determine the density of insoluble granules. (1 alama)

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What is the usefulness of laboratory rules when carrying out experiments in the Physics laboratory?

Describe three ways in which magnets can be destroyed.

1. Describe three ways in which magnets can be destroyed. (6 alama)
2. Describe three ways in which magnets can be destroyed. (6 alama)
3. Using vivid examples, identify four applications of magnets in our daily life. (4 alama)

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What is the function of the constriction in a clinical thermometer? Explain the principle on which a liquid-in-glass thermometer works. At what temperature do Fahrenheit and Celsius scale give the same reading?

1. What is the function of the constriction in a clinical thermometer? (2 alama)
2. Explain the principle on which a liquid-in-glass thermometer works. (2 alama)
3. At what temperature do Fahrenheit and Celsius scale give the same reading? (2 alama)

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A boy of mass 50 kg was pushed by a constant force of 20 N for 3 seconds. Determine the acceleration acquired by the body.

1. Suppose you find a man along the road pushing a motor cycle and it accelerated, but the same man pushed a car and failed to move it. Why the man failed to push the car? Briefly explain. (2 alama)
2. A boy of mass 50 kg was pushed by a constant force of 20 N for 3 seconds. Determine the acceleration acquired by the body. (2 alama)
3. Determine the acceleration acquired by the body. (2 alama)
4. An object in a state of rest or moving with uniform motion has no forces acting on it. Argue against this statement. (2 alama)

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John started moving the car from rest and the car accelerated uniformly at the rate of 4 m/s² for 5 s and maintained a constant velocity for 20 s. Afterwards he applied the brakes and the car retarded uniformly to rest in 3 s. Calculate the total distance covered by the car.

1. Calculate the total distance covered by the car. (10 alama)

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a) Why is an inclined plane regarded as a simple machine? b) The wheel and axle with an efficiency of 85% is used to raise a load of 6000 N. If the radius of the wheel is 50 cm while that of the axle is 15 cm, calculate: i) The velocity ratio of the wheel and axle. ii) The mechanical advantage of the wheel and axle.

1. Why is an inclined plane regarded as a simple machine? (3 alama)
2. The velocity ratio of the wheel and axle. (3 alama)
3. The mechanical advantage of the wheel and axle. (4 alama)

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a) Why does a body rotate when a certain force is applied on it? b) Figure 1 shows a uniform metre rule of weight 2N which is pivoted at 40 cm mark. If a force of 4 N acts at the end of the metre rule, calculate the value of force X required to keep the rule in equilibrium.

1. Why does a body rotate when a certain force is applied on it? (3 alama)
2. Figure 1 shows a uniform metre rule of weight 2N which is pivoted at 40 cm mark. If a force of 4 N acts at the end of the metre rule, calculate the value of force X required to keep the rule in equilibrium. (7 alama)

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a) Compare natural gas and geothermal energy sources by considering the following: i) Environmental safety ii) Sustainability b) Using two points, state why solar cars are better than petrol cars. c) Give three disadvantages of hydroelectric power.

1. Environmental safety (2 alama)
2. Sustainability (2 alama)
3. Using two points, state why solar cars are better than petrol cars. (3 alama)
4. Give three disadvantages of hydroelectric power. (3 alama)

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a) Explain how an ammeter and a voltmeter are connected in a circuit. b) In the circuit shown in Figure 2, the battery and an ammeter have negligible internal resistance. Determine the ammeter reading.

1. Explain how an ammeter and a voltmeter are connected in a circuit. (6 alama)
2. In the circuit shown in Figure 2, the battery and an ammeter have negligible internal resistance. Determine the ammeter reading. (9 alama)

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