The top of a pizza cooks via radiation.Most of the time, in cooking, all three methods of heat
transfer are used to varying extents. Take a burger on the
grill, for example. The grill grate heats the patty directly
where it is in contact with it through conduction, rapidly
browning it at those spots. The rest of underside of the patty
is cooked via radiation from the coals underneath. Place a
piece of cheese on the burger and pop the lid down for a bit,
and convection currents will form, carrying the hot air from