What is convection in physical science?

Answer 1

Convection is when water warms and expands. As the heated water expands, it rises because when a substance is hotter, it is also less dense. When the hotter and lighter water rises and reaches its maximum height, it is the farthest away from its heat source. It is then cooled and becomes more dense, sinking back down towards it's original location. It is usually related to liquids.

Answer 2

Convection is heat transfer in a gas or liquid driven by density differences which cause circulation.

Warm liquids and gases are less dense than could liquids or gasses and the warm liquids or gases therefore rises buoyantly, causing circulating currents which distribute the heat from one place to another.

Answer 3

Convection is the process of heat transfer through the movement of a fluid (such as air or water) due to temperature differences. As a fluid is heated, it becomes less dense and rises, creating a convection current. This movement helps distribute heat evenly and can be seen in phenomena like ocean currents and atmospheric circulation.

Answer 4

It is the cycle of heating, rising, cooling, and sinking.

Answer 5

Convection is the transfer of heat by the actual movement of the warmed matter and takes place only in liquids and in gases.

Answer 6

the transfer of heat by currents within a liquid or gas

Answer 7

the transfer of energy as heat through a material

Answer 8

convection is transfer of something when 2 things are placed adjacent to each other .

generally this term is used when we are describing heat transfer process.

Answer 9

cooler air sinks,pushing warmer air upwards. the result is a circulating current of air called convection current