CAIE IGCSE Physics 7 Assessed Scientific Skills Topic Practice

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Covered syllabus points

7.1 Handling information and problem-solving7.2 Experimental skills and investigations7.3 Mathematical and data-presentation skills

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]

Fig. 5.1 shows a road junction, a moving car and a stationary truck. The road has high walls on each side.

Fig. 5.1

Fig. 5.1

The driver of the truck is at position X. The car moves around the corner.

On Fig. 5.1, label a point Y on the road where the truck driver first sees the car.

Question 4

[Maximum number: 1]

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

Figure for Question 4 — 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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