The air directly above the Earth's surface is heated by conduction. Warm air is then circulated through the atmosphere by convection currents.
Convection, the transfer of heat in fluids (gases or liquids), ultimately relies on conduction (the transfer of heat energy through contact) between the molecules composing the fluid. Heat can only be exchanged through a fluid by individual molecules coming into contact and exchanging their heat energy or losing kinetic energy to form heat energy.
The process convection would not be able to happen without a conductor. This is because the heat has to be able to travel through something.
You are probably thinking of convection, which is transfer of heat by currents set up by variations in density of the liquid.
The three methods of heat transfer are: (1) Conduction - particles bump into other particles, transferring energy. (2) Convection - moving masses carry heat with them. Especially, hot air (for example) tends to rise up, because of its lower density - the heat difference itself causes the currents. (3) Radiation. Objects radiate electromagnetic radiation, depending on their temperature. (The amount of energy radiated increases quickly at higher temperatures.)
because conduction,convection and radiation keep the flask thermal because of what they do
conduction, radiation, convection, and thermal energy
A campfire uses all three heat transfer methods conduction, convection, and radiation.
Convection and conduction.
convection conduction and radiation
Conduction, Convection, Conduction,Convection, Conduction, Radiation
In simple terms, conduction, convection and radiation describe the three modes involved in the transformation of heat energy from one place to another.
Conduction
This proess is called conduction. The other processes are convection and radiation. Convection is the transfer of energy through movement, such as boiling water. Radiation is the transfer of thermal energy through a medium or space, such as the sun heating the earth.
conduction by itself is slower to heat but conduction and convection is faster to heat
Heat (or thermal) energy is kinetic energy due to motion of atoms and molecules. It is energy that is in the process of being transferred from one object to another because of their temperature difference
Convection has a cycle of what happens. Conduction dosent have a cycle
Conduction :)
Lack of a flow medium will inhibit conduction and convection.
convection conduction radiation