Physics
Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in

Convection
Conduction
Radiation
Both conduction and convection

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Physics
A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because

The stone conveys the heat away from the feet more rapidly than the carpet
The floor and carpet are at different temperatures
The carpet is a better conductor of heat than the stone
The human body maintains a constant temperature

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Physics
Scalar Quantities are

Physical quantities which have no magnitude and no direction
Physical quantities which have no magnitude only and only direction
Physical quantities which have magnitude only and no direction
Physical quantities which have magnitude only and direction

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