CAIE IGCSE Physics Assessed Scientific Skills

Practise CAIE IGCSE Physics assessed scientific skills by using Core and Extended calculation evidence such as density, mass and volume data.

Covered syllabus points

7.1 Handling information and problem-solving 7.2 Experimental skills and investigations 7.3 Mathematical and data-presentation skills

[Maximum number: 1]

For which one of the following measurements would a micrometer screw gauge be most suitable?

length of this page

length of a pencil

diameter of a wire

diameter of an atom

[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 $-39^{\circ} \mathrm{C}$ .

(a)

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

[ 4 ]

(place) in melting ice

B1

when bead has stopped moving OR owtte mark as lower fixed point $/ 0^{\circ} \mathrm{C}$

B1

(place) in steam (above boiling water)

B1

when bead has stopped moving OR owtte mark as upper fixed point $100^{\circ} \mathrm{C}$

B1

(b)

State a design change that:

[ 2 ]

(i)

increases the sensitivity of a liquid-in-glass thermometer

[ 1 ]

(ii)

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

[ 1 ]

[Maximum number: 2]

Fig. 3.1 shows a model of a wind turbine used to demonstrate the use of wind energy to generate electricity. The wind is blowing towards the model, as shown.

Fig. 3.1

The density of air is $1.3 \mathrm{~kg} / \mathrm{m}^{3}$ .

Calculate the volume of air passing through the circular area swept out by the turbine blades each second.

volume =

$\rho=\mathrm{m} / \mathrm{V}$ in any form $\mathrm{OR}(\mathrm{V}=) \mathrm{m} / \rho$ $\text { OR (V = )7.5 / } 1.3$

C1

$(\mathrm{V}=7.5 / 1.3=) 5.8 \mathrm{~m}^{3}$

A1

[Maximum number: 1]

Five athletes P, Q, R, S and T compete in a race. The table shows the finishing times for the athletes.

Table for Question 7. Assessed scientific skills question 4 — CAIE IGCSE Physics

Which statement is correct?

Athlete P won the race and was 0.70 s ahead of the athlete in second place.

Athlete P won the race and was 1.90 s ahead of the athlete in second place.

Athlete S won the race and was 1.30 s ahead of the athlete in second place.

Athlete S won the race and was 2.10 s ahead of the athlete in second place.

All question bank results loaded

Covered syllabus points

7. Assessed scientific skills question 1

7. Assessed scientific skills question 2

Question (a)

Question (b)

Question (i)

Question (ii)

7. Assessed scientific skills question 3

7. Assessed scientific skills question 4