Question

write 2 ways each where
1. convection takes place
2. conduction takes place
3. radiation take place
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Answer 1

Heat can be transferred from one place to another by three methods:conduction in solids, convection of fluids (liquids or gases), and radiationthrough anything that will allowradiation to pass. The method used to transfer heat is usually the one that is the most efficient.

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Answer 2

1.Convection occurs on a large scale in atmospheres, oceans, planetary mantles, and it provides the mechanism of heat transfer for a large fraction of the outermost interiors of our sun and all stars.

2.Conduction occurs usually in solids where molecules in the structure are held together strongly by intermolecular forces of attraction amongst them and so they only vibrate about their mean positions as they receive heat energy and thus pass it to the surrounding molecules by vibrations.

3.The heat and light from the sun in our solar system reach our planet using radiation only.In fact, radiation is the most potent method of heat transfer. In winters when we sit near a fire we feel warm without actually touching the burning wood. This is possible by radiation only.

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