In bridges to overcome expansion there is use of

Blocks of concrete which are few meters long are laid with gaps to overcome

A solid, liquid or gas loses its heat when the temperature is

When the energy is carried by circulating current of particles within a liquid or gas it is

When the state of matter changes the temperature

A fluid is a substance which can

Hot air balloons rises due to occurrence of expansion of

A form of energy which flows from hotter region towards cooler region n reach on same temperature is called

On heating the particles of substance expand due to

In appliances like electric irons, heaters, air-conditioners and refrigerators the temperatures are kept constant by

Ice cubes melt at room temperature due to heat

If one part of fluid is heated it

Sea and land breezes are due to

Homes and buildings are kept well ventilated by making use of

Cables are kept away from expansion and sagging by giving

The heat which in in the form of infra-red waves, emitted in all the directions at the speed of light is

When hot lava comes out of Earth's surface it loses its

Bimetallic strip when heated bends

In thermometer the element which is used to show temperature is

The gain or loss of heat affect the state of