# What Is a Convection Current?

Convection currents are continuous movements of water caused by the expansion of the water as its temperature rises. These currents arise in the atmosphere above warm land masses or seas, giving rise to sea breezes and land breezes, respectively.
Convection currents are circular movements in a fluid that are caused by expansion of masses of the fluid due to changes in temperature and density. The denser masses tend to move downwards and the less dense masses move upwards above the lighter masses.
Convection currents are circular movements that occur when a fluid is not uniformly heated so that part of the fluid rises, then cools and then sinks. It occurs as a result of alteration in the density of a substance when heated or cooled.
Convection currents occur when there is difference in temperature causing fluid material to move. The expanded material, being less dense, rises, while colder, heavier material sinks thus making heating systems to use convection currents to carry hot water upwards in pipes.
Convection current is the term for a current that is caused by the expansion of a liquid, gas or solid as its temperature increases. In geography, convection currents usually form above warm land masses or seas and this is what results in sea breezes or land breezes.
A convection current is a current caused by the expansion of a liquid, solid or gas as its temperature rises. Convection currents arise in the atmosphere above warm land masses or seas resulting in land and sea breezes. In some heating systems, convection currents are used to carry water upwards in pipes.
Convection current is when molecules, such as gases and liquids, move because of heating and cooling of the molecules. You can experience this when a heater heats up a room.
Q&A Related to "What Is a Convection Current"
 The "convection current" is one of the major modes of heat and mass transfer. It is defined as the movement of molecules within fluids. http://answers.ask.com/Science/Other/what_is_conve...
 The sun drives convection in the atmosphere and, to a lesser extent, in the oceans. Heated air rises in convection currents from the Earth's surface in columns called "thermals http://www.ehow.com/facts_5723446_causes-convectio...
 Convection currents which make the Earth's crust float on the mantle are caused by the hot magma below. Convection currents can occur in all kind of hot mixes, even when you are making http://wiki.answers.com/Q/What_leads_to_convection...
 ( kən′vek·shən ′kər·ənt ) (electronics) The time rate at which the electric charges of an electron stream are transported through a given http://www.answers.com/topic/convection-current%20
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