Conduction is all about when heat is transferredthrough a solid. The heat is passed on by vibrationsin the molecules. These vibrations get BIGGER whenthe solid has more.Metals are better conductors than non-metals.
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Convection
Convection is all about when a gas or liquid (“fluid”) moves and carriesheat with it. When the fluid is heated it expands. This means that it willbecome less dense than the colder fluid around it. Because of this thewarmer fluid will try to “rise” over the colder fluid, and this is why warmair rises. This is called a convection current.
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Raidation
When you wear a black t-shirt on a hot, sunny day you would feel hotter than if you wore white. This is because black absorbsinfrared radiation (i.e. heat) from the sun better than white does. It also can travel through a vacum. It Can travel through solidliquids and gases.
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