Conduction of heat best takes place in……..
a) solids
b) fluids
c) gases
Materials that trap air like fur, wool and saw dust are heat…….
a) insulators
b) conductors
c) convectional devices
d) reflectors
The heat transfer that occurs due to a density difference in fluids is……
a) conduction
b) radiation
c) convection
d) insulation
Huge amount of heat is being generated on sun. this heat reaches from sun to earth by…
a) radiation only
b) convection only
c) convection and radiation
d) conduction, convection and radiation
