Table 5.1 defines three specific temperatures. Complete Table 5.1 by writing the correct temperature in kelvin (K\text{K}K) for each definition.
Table 5.1
| Definition | Temperature / K\text{K}K |
|---|---|
| pure water freezing at standard atmospheric pressure | |
| pure water boiling at standard atmospheric pressure | |
| the lowest possible temperature of matter (absolute zero) |
The temperature of liquid nitrogen is −196∘C-196^\circ\text{C}−196∘C. Calculate this temperature in kelvin.
Temperature=\text{Temperature} =Temperature= .................................... K\text{K}K
A student investigates thermal energy transfer using four different metal rods of the same dimensions. One end of each rod is placed in a beaker of boiling water, and each rod is coated with a thin layer of wax.
State the name of the process for thermal energy transfer through the metal rods.
State how the student can use this setup to determine which metal transfers thermal energy at the greatest rate.
Two identical metal cans, one painted matte black and the other painted shiny silver, are filled with equal volumes of cold water. Both cans are left in direct sunlight on a hot day.
State and explain which can will have the higher water temperature after one hour. Include the name of the process of thermal energy transfer from the Sun to the cans.
301 exam-style questions on CIE IGCSE Physics 2.3 Transfer of thermal energy, covering 2.3.1a Thermal conductors and thermal insulators, 2.3.1b Explaining thermal conduction, 2.3.2 Convection, 2.3.3a Thermal radiation, 2.3.3b Surface colour and texture, 2.3.3c Rate of emission and absorption of radiation, and 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.