Paper 1 - Multiple Choice Questions for Physics Chemistry and Biology
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7/17/2019 0654 IGCSE Coordinated Sciences Paper 1 - 2013
31 A beaker of cool liquid stands in a warm room. The temperature of the liquid is falling becausemolecules are escaping from the surface of the liquid.
Which row gives the name of this process, and also shows which molecules are escaping fromthe liquid?
name of process molecules thatare escaping
A condensation least energetic
B condensation most energetic
C evaporation least energetic
D evaporation most energetic
32 Which row shows what happens to the temperature of a solid as it melts and what happens to thetemperature of a liquid as it boils?
temperature whena solid melts
temperature whena liquid boils
A increases increases
B increases no change
C no change increases
D no change no change
7/17/2019 0654 IGCSE Coordinated Sciences Paper 1 - 2013
33 A hot water tank is fitted with two identical heaters P and Q. Heater P is two thirds of the way upthe tank and heater Q is at the very bottom. The tank is full of cold water.
heater P
heater Q
When only heater Q is switched on, it takes a long time to heat the tank of water to the requiredtemperature of 60 °C.
What happens to the tank of cold water if only heater P is switched on?
A All the water reaches 60 °C in less time than before.
B All the water reaches 60 °C in the same time as before.
C The bottom two thirds of the water reaches 60 °C in two thirds of the original time.
D The top one third of the water reaches 60 °C in one third of the original time.
34 The diagram shows a wave.
2 cm
10 cm
What is the amplitude of the wave?
A 1 cm B 2 cm C 5 cm D 10 cm
7/17/2019 0654 IGCSE Coordinated Sciences Paper 1 - 2013
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