LSS Heat Transfer

What is the SI unit of temperature?

• Fahrenheit
• Kelvin
• Rankine
• Celsius

Which method of heat transfer does not require a medium?

• Conduction

• Convection

• Radiation

• Evaporation

Which of the following surfaces is the best emitter of heat radiation?

• A transparent, glass surface
• A black, rough surface
• A white, glossy surface
• A shiny, smooth surface

Why are gaps left between railway tracks?

• To allow for water drainage
• To accommodate thermal expansion and contraction of the rails.

• To prevent trains from derailing
• To reduce noise from passing trains

In which of the following applications is convection used?

• Cooking with a metal pan

• Sea breezes

• Solar panels

• Vacuum flasks

The SI unit of temperature is

Heat transfer in solids occurs through

The shiny outer surface of a thermos flask reduces heat transfer by

......................is the method of heat transfer responsible for land and sea breezes.

Dark, rough surfaces absorb and emit heat _________ than light, smooth surfaces.

• faster

• slower