Which heat transmission does not any medium?
Convection
Conduction
Radiation
Vaporisation
When an ice cube is kept on the palm, it starts melting because?
of the presence of sweat on the palm
the heat energy of the palm gets transferred to the ice cube
the heat energy of the ice cube gets transferred to the palm
of the atmospheric and body pressure on the ice cube
One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be?
80°C
more than 50°C but less than 80°C
20°C
between 30°C and 50°C
The cool air from the land moves towards the sea is called?
Wind
Land breeze
Sea breeze
Gentle breeze
Which is example for conductors?
Water
Air
Copper
Plastic
The warm air from the land moves towards the sea is called?
The materials which do not allow heat to pass through them easily are called?
Metals
Plastics
Conductors
Insulators
The materials which allow heat to pass through them easily are called?
Gases
Transfer of heat in solids is called?
What is our normal body temperature?
370C
450C
500C
550C