Difference between convection and conduction

Answer 1

Convection is a natural process that occurs in nature all the time, and even in your kitchen. Take a pot of boiling water for example. the water closer to the flame becomes hotter than the water near the top of the pot. As we all know, warm things rise, and cold things fall. So the hot water replaces the cooler water at the top of the pat. Where does the cold water go? It is forced to the bottom of the pot, where it too is then heated up, and replaces the water at the top of the pot that by now has cooled of.

In simpler terms, convection is the circulation of LIQUID (or GAS), driven by heat (or cold).

Conduction would have to do with WHAT the pot is made of, and how quickly/easily heat is transfered through it. Most of the time, conduction travels through SOLIDS (and sometimes GASES, i believe). Take a light bulb and a batterie, for example. To create a circuit, you need energy to get from the batterie, to the lightbulb, and then back again. If you were to use wires made off rubber, the electricity would not transfer through the wiring. You would have to use a wire made of some sort of conductive material.

Hope this helped a bit!

Answer 2

Almost everything expands when heated, and when substances expand they become less dense, hence they will rise if they are in an environment of cooler, denser material. So hot air rises, and hot water rises. This process is called convection. Rising currents will also cause cooler material to flow into the space that they vacate, so convection currents usually wind up causing vaguely circular patterns.

Conduction involves the transfer of heat between two objects or materials that are of different temperature, which are in contact, which is to say, touching.

Answer 3

Conduction: heat gets transported from one point to the next, by the jostlinig of the molecules, without movement of matter.

Convection is related to movement of matter.