We lose heat from our bodies by convection, conduction and radiation. When the wind blows it not only removes a boundary layer of warmth generated from convection, but conduction also comes into play from the wind blowing on our face continuing to reduce temperature.

(d) Convection causes sea breeze and land breeze. Heat transfer through fluids takes place by the process of convection. Sea breeze: It is the wind that blows from the sea or the oceans towards the land. It develops during day time when the land heats up quickly.

A sea breeze is a wind blowing from the water onto the land. Land breezes and sea breezes arise because of differential heating between land and water surfaces. Land and sea breezes can extend inland up to 100 mi (161 km), or manifest as local phenomena that quickly weaken with a few hundred yards of the shoreline.

Sea breezes occur during hot, summer days because of the unequal heating rates of land and water. During the day, the land surface heats up faster than the water surface. As the warm air over the land is rising, the cooler air over the ocean is flowing over the land surface to replace the rising warm air.

Wind is caused by the unequal heating of the Earth which causes differences in air pressure. Wind moves from areas of high pressure to areas of low pressure. land breezes occur because land cols off faster than water.

First, radiation from the Sun warms the sand. Second, the hot sand conducts energy to the air. Third, the warm air carries energy upward in convection.

When you first lie down on hot sand, then the energy flows from the hot sand to your cooler body by conduction. Free or natural convection is heat transfer carried by a rising current of fluid due to buoyancy effects created by the hotter fluid being less dense.

In the water in the pot, convection currents are set up, helping to heat the water uniformly. While watching the campfire you feel the heat of the glowing fire via radiation. Heat transfer in fluids generally takes place via convection.

Yep, the sand is hot, but the water is just right there, so, you keep walking. Your feet begin to ache and the burning increases, but of course, you keep walking, because the water is right there. Whew! You made it, your feet can get relief from the heat in the cool water.

Will It Ever Catch Fire? Sand is not flammable. Thus, sand is already “burned”, and it won’t catch light if you try to set fire to it. There is no unoxidized silicon in sand to react with oxygen.

Examples of Things That Are Not Radiation For example deuterium is an isotope of hydrogen that is not radioactive. A glass of heavy water at room temperature does not emit radiation. (A warm glass of heavy water emits radiation as heat.) A more technical example has to do with the definition of radiation.

Making popcorn by CONVECTION heating. Obtain an “air popcorn popper.” Put popcorn kernels in the popper. Plug in and turn on the popper. How it works: Hot air begins to rise in the popper while cooler air falls. As hot air circulates past the popcorn kernels, the kernels absorb the heat.

When you hold your hand over the stove (not touching it), you can feel the heat. The air above the stove is heated and because it is a gas, moves upward. This is convection. The bottom of the pot and the surface of the stove are not 100% flat.

The primary method of heat transfer when ironing clothes is conduction. The iron heats up very quickly because it is metal, which is a good conductor….

The movement of steam or the motion of boiling water in a pot are also examples of convection. Stirring a pot of soup would be considered a form of convection, as it redistributes the heat from the bottom of a pot throughout the soup.

Frying a pancake is an example of a)conduction because the metal of the frying pan conducts heat to the pancake.