2006-06-10 23:52:18 · 9 answers · asked by Dark A 1 in Science & Mathematics ➔ Physics
actual motion of heated matter in streams called convection currents.
2006-06-10 23:56:29 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Convection is the transfer of heat by currents within a fluid.Most fluids are liquids, gasses, and plasmas.
It may arise from temperature differences either within the fluid or between the fluid and its boundary, which would affect density. Other sources of density variations, such as variable salinity, or from the application of an external motive force are also often causes.
It is one of the three primary mechanisms of heat transfer, the others being conduction and radiation
2006-06-11 00:00:58 · answer #2 · answered by Leo 3 · 0⤊ 0⤋
movement of the particles of the substance under influence of gravity. when heated the particle become lighter and move up but due to gravity they are forced to come down again and new hot and light particles move up to take their place.
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It is seen in liquids and gases
2006-06-11 02:23:59 · answer #3 · answered by marcus 1 · 0⤊ 0⤋
motion of a gas or fluid under gravity
(convection cannot occur without gravity)
2006-06-10 23:54:27 · answer #4 · answered by Epidavros 4 · 0⤊ 0⤋
Air infrared
2006-06-11 00:05:54 · answer #5 · answered by Anonymous · 0⤊ 0⤋
transfer of particles from hot region to cold region
2006-06-10 23:57:05 · answer #6 · answered by gaurav g 1 · 0⤊ 0⤋
waves in the medium
2006-06-10 23:58:26 · answer #7 · answered by sikandar 2 · 0⤊ 0⤋
either liquid or gas
2006-06-11 00:00:58 · answer #8 · answered by catholica 4 · 0⤊ 0⤋
waves? medium?
2006-06-10 23:54:29 · answer #9 · answered by CloudNo.9 1 · 0⤊ 0⤋