Conduction
What is the primary mode of heat transfer in solids?
Conduction
What heat transfer occurs in fluids due to density change?
Convection
What heat transfer doesn't need a medium?
Radiation.
Name one good conductor of heat?
Copper
Give an example of natural convection.
Warm air rising.
Main source of radiant energy on Earth?
Sun
What property affects how quickly heat is conducted?
Thermal Conductivity
Difference between natural and forced convection?
Natural from buoyancy; forced by fan/pump.
Which waves carry thermal radiation?
Infrared.
Why do metals feel colder than wood at the same temperature?
Metals conduct heat away faster.
Which kitchen appliance uses convection?
Convection oven.
Best surface for emitting/absorbing radiation?
Black surface
What law describes rate of heat transfer in conduction?
Fourier’s Law.
Which dimensionless number relates to convection?
Nusselt number.
What law involves temperature^4 and radiation?
Stefan–Boltzmann Law.