1 Which of the following is an example of conduction? A A metal spoon getting hot in a cup of tea B Warm air rising from a heater C Feeling the sun's warmth on your skin D A microwave heating food
2 Which of the following is a good conductor of heat but a poor conductor of electricity? A Copper B Diamond C Iron D Silver
3 What is the process of heat transfer in fluids due to the movement of particles? A Conduction B Convection C Radiation D Expansion
5 Which of the following surfaces is the best radiator of heat? A Shiny surface B Black surface C White surface D Polished surface
7 Which instrument is used to measure temperature? A Barometer B Thermometer C Hygrometer D Anemometer
11 What is the heat required to raise the temperature of 1 kg of a substance by 1°C called? A Specific heat capacity B Latent heat C Thermal capacity D Heat of fusion
12 In which state of matter is convection the primary method of heat transfer? A Solids B Liquids and gases C Vacuum D All states equally
14 Which method of heat transfer is responsible for ocean currents? A Conduction B Convection C Radiation D Evaporation
15 Which of the following materials expands the most when heated? A Solids B Liquids C Gases D All expand equally
16 Which of the following is an example of radiation? A Boiling water B Feeling heat from the sun C Touching a hot stove D Warming hands near a fire
18 What happens to the volume of most substances when heated? A Increases B Decreases C Remains the same D First decreases then increases
19 Which of the following is a reason for using a vacuum in a thermos flask? A Prevents conduction and convection B Prevents radiation C Increases heat transfer D Reduces weight
21 Which of the following is the best emitter of thermal radiation? A White surface B Shiny surface C Black surface D Transparent surface
22 Which of the following describes the relationship between Celsius and Kelvin? A K = °C + 273 B K = °C - 273 C K = °C × 273 D K = °C / 273