An interesting question. The answer is yes but you would have to look for a very, very long time to see evidence of this happening - The example I would point to is the convection driving the plate tectonic system in the Earth. This is moving the continents of Europe and America apart at a rate of about 2 cm a year.
The fact is that, given enough time, nothing is actually solid - have you ever played with silly putty? if you role it into a ball it will bounce, if you pull it hard it will break, if you pull it slowly it will stretch. It is the same with solids, given enough time they will 'flow' and deform in response to a force.
Thus on human time scales, solids do not undergo convection, but on geological time scales they doundergo convection.
The definition of convection is "The movement in a gas or liquid in which the warmer parts move up and the colder parts move down."
By this definition the term does not apply to solids
Conduction :)
transfer heat by fluid motion
Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but is referred to separately in that case as heat convection.
the solids can turn to liquids by melting and to gas by sublimation
The molecules in solids are not free to move around as they are in liquids and gasses. It's the movement of the molecules that creates the convection currents.
Conduction :)
transfer heat by fluid motion
please explain
Convection of mass cannot take place in solids, since neither bulk current flows nor significant diffusion can take place in solids. Diffusion of heat can take place in solids, but is referred to separately in that case as heat convection.
the solids can turn to liquids by melting and to gas by sublimation
Matter doesn't move easily in solids.
Either by conduction or convection?
by The movement of heated particles of a gas or a liquid. convection cannot take place in solids because solids have fixed shape. particles like Pizza
by The movement of heated particles of a gas or a liquid. convection cannot take place in solids because solids have fixed shape. particles like Pizza
The molecules in solids are not free to move around as they are in liquids and gasses. It's the movement of the molecules that creates the convection currents.
In gases mainly by convection, that is by bulk movement of molecules of the gas. In solids by conduction, that is by contact between atoms of the material.
..to flow as easily. A malleable (space between particles) structure is need for convection to take place.