CAIE IGCSE Physics 7.2 Experimental Skills and Investigations Topic Practice

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Covered syllabus points

7.2.1 Select and safely use techniques and apparatus7.2.2 Plan experiments and investigations7.2.3 Record observations and measurements7.2.4 Interpret and evaluate experimental data7.2.5 Evaluate and improve methods

Question 1

[Maximum number: 2]

Fig. 10.1 shows a vacuum tube with a radioactive source. The radioactive source emits α\alpha-particles, β\beta-particles and γ\gamma-rays. There is a very strong magnetic field between the N pole and the S pole of the magnet.

Fig. 10.1

Fig. 10.1

The lead cylinder has a narrow central hole. State and explain the effect of the lead cylinder.

Question 2

[Maximum number: 6]

Fig. 4.1 shows a liquid-in-glass thermometer without a temperature scale. The liquid inside the thermometer has a melting point of −39∘C-39^{\circ} \mathrm{C}.

Question (a)

(a)

Describe simple experiments to mark the positions of the fixed points on this liquid-in-glass thermometer.

[ 4 ]

Question (b)

(b)

State a design change that:

[ 2 ]

Question (i)

(i)

increases the sensitivity of a liquid-in-glass thermometer

[ 1 ]

Question (ii)

(ii)

increases the range of a liquid-in-glass thermometer.

[ 1 ]

Question 3

[Maximum number: 1]

The diagram shows a liquid-in-glass thermometer with a uniform capillary tube.

Figure for Question 3 — CAIE IGCSE Physics

Which temperature is indicated by the thermometer?

A

73∘C73^{\circ} \mathrm{C}

B

80∘C80^{\circ} \mathrm{C}

C

82∘C82^{\circ} \mathrm{C}

D

90∘C90^{\circ} \mathrm{C}

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