Land and sea breezes are the result of

Thermal energy from a hot body flows to a cold body in the form of

A. sound

B. signals

C. heat

D. waves

Transfer of heat by actual movement of molecules from a hot place to a cold place is known as

A. radiation

B. conduction

C. convection

D. fusion

The rate of flow of heat across the opposite faces of a meter cube of a substance maintained at the temperature difference of 1 kelvin is called its

A. thermal radiation

B. flow of energy

C. thermal conductivity

D. convection

The heat transfer from one place to another takes place through

A. conduction

B. convection

C. radiation

D. all of above

The thermal conductivity of plastic foam is

A. 0.05

B. 0.03

C. 0.02

D. 0.06