A puddle of water lies on a flat concrete pavement. The water, the pavement, and the surrounding air are all initially at the exact same temperature. After a short time, the temperature of the water in the puddle is found to have decreased below the temperature of the air and pavement. Which process is responsible for this temperature decrease?
Conduction of heat from the water into the concrete pavement
Convection currents transferring heat from the water to the air
Evaporation of water from the surface of the puddle
Infrared radiation emitted by the water being greater than that absorbed from the surroundings
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.