PHYSICS-HEAT TRANSFER (THERMODYNAMICS) EXAM QUESTIONS WITH COMPLETE SOLUTIONS

PHYSICS-HEAT TRANSFER
(THERMODYNAMICS) EXAM
QUESTIONS WITH COMPLETE
SOLUTIONS
examples of practical applications of conduction in everyday life - ANSWER-ironing
clothes
curling hair
heating pad
ice pack
eating ice cream
winter outwear

convection - ANSWER-the transfer of heat in fluids (liquids and gases) by the mass
movement of molecules. continuous flow called a convection current

convection is the transfer of heat in _______ (_____ and ____) by the _____ ______ of
molecules. This continuous flow is called a ______ ______. - ANSWER-fluids (liquids
and gases)
mass movement
convection current

two types of convection - ANSWER-natural and forced

examples of natural convection - ANSWER-heating water in a pan
cooling a fridge
mountain breezes

winter outwear to stop convection - ANSWER-button or zip coat
snug wrists and waist band
scarf

forced convection - ANSWER-fluid is mechanically moved

examples of forced convection - ANSWER-fan cooling computer/projector
hair dryer
hand dryer
automobile cooling system
human circulatory system

radiation - ANSWER-The transfer of energy(heat) by electromagnetic waves