EduNinja

[Maximum number: 1]

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

A

length of this page

B

length of a pencil

C

diameter of a wire

D

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: 1]

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

Figure for Question 7.2 Experimental skills and investigations question 3 — CAIE IGCSE Physics

Which temperature is indicated by the thermometer?

A

$73^{\circ} \mathrm{C}$

B

$80^{\circ} \mathrm{C}$

C

$82^{\circ} \mathrm{C}$

D

$90^{\circ} \mathrm{C}$

CAIE IGCSE Physics 7.2 Experimental Skills and Investigations Topic Practice

7.2 Experimental skills and investigations question 1

7.2 Experimental skills and investigations question 2

Question (a)

Question (b)

Question (i)

Question (ii)

7.2 Experimental skills and investigations question 3