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Convection is the tendency of heated air or water to rise, because the molecules have more energy and take up more space -- the less dense air or water is displaced by cooler, denser fluid. Convection typically forms a cycle where fluid is heated then cooled. On the Sun, huge convection cells carry heated plasma from the interior to the outer surface or photosphere.
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Convection cooking means bringing airflow into the oven. This form of cooking is faster and more efficient than a regular oven. Convection ovens have special fans and one more element installed. Another great thing about convection ovens is that they have three elements instead of two like a regular oven, so everything cooks much more evenly.
Fatima Ziemann
Wiki User
∙ 13y agoConvection means to bombard from all sides. The well known convection oven is a good example as it not only heats from the bottom (like a stove), but from all sides.
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How do you transfer heat in three different ways?
You can conduct it, convect it, or radiate it.
What is an example of convection in earths surface?
Not within the surface rocks, but at surface level yes. Air and water both convect.
Is the crust a convection?
No. The crust is too rigid to convect. The mantle convects, and this convection is part of what controls the movement of tectonic plates.
Why is earth called and active planet and what does it mean?
In the case of Earth, "active" means that the planet has geological processes happening that are moving and reforming the planetary crust. These processes are driven by heat from the planets core which cause the planets substance to convect slowly.
What feature of the mantle allows movement of the earths crust occur?
The much of the mantle is solid but ductile. This allows it to convect, which aids in plate movement.
Why is there no heat transfer by convection or conduction through a vacuum?
Conduction needs a conducting medium. Convection needs something to convect. Neither exists in a vacuum.
What is the Convect?
Inside this zone is where hot gas bubbles rise faster than they can cool meaning that this zone would look exactly like a LavaLamp!!!
What things use condution?
Moving fluids convect heat, meaning they move heat from one location to another. A fluid is a liquid or a gas (vapor).
What is the purpose of the fins on the heat sinks?
They create a large surface area so that they can convect heat away from further away from the transistors meaning they are more effective at keeping it cool
Convection currents in the earths crust causes volcanos?
No. Earth's crust does not convect. Convection in the mantle, however can create hot spots and rifting, which can lead tot he formation of volcanoes.
What is the purpose of the heat sink-fan?
They create a large surface area so that they can convect heat away from further away from the transistors meaning they are more effective at keeping it cool
Why is wadding or filling a good insulater?
Wadding, or filling, will trap pockets of air. As the air is trapped, it cannot convect heat so easily, and it is also more difficult for heat to be conducted. So, trapped air is a good insulator.
