2023 · Specimen · 0625/04 | Q5

Back Next

0/33parts marked · 0 of 75 marks

All questions

Question (5 of 12)6 marks · Practise this topic →

Options

Available practice: 75 of 80 marks. Parts 3(b), 6(a)(i) await marking support. Scores cover available parts only.

(a)Compare the arrangement and motion of the particles in ice and in liquid water.

Answer guidance

Compare Say something about both, and make the comparison explicit rather than leaving it implied.

[2 marks]

A lake has a layer of ice on its surface. The area of the lake is 1800 m². The ice has a thickness of 0.025 m. The density of ice is 920 kg/m³.

(b)(i)Calculate the mass of ice on the lake.

Answer guidance

Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.

[2 marks]

A lake has a layer of ice on its surface of area 1800 m², thickness 0.025 m and density 920 kg/m³ (mass of ice = 41400 kg). At night, the temperature of the ice on the lake falls by 3.5 °C. The specific heat capacity of ice is 2.1 × 10³ J/kg °C.

(b)(ii)Calculate the change in energy as the temperature falls.

Answer guidance

Calculate Show your working. The method can earn marks even when the final value is wrong, and a bare answer often cannot.

[2 marks]

0625/04/SP/23Cambridge IGCSE Physics 0625 · Specimen 2023 · Paper 4 · Question 5