0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why does heat from a grill travel to the food through radiation and not conduction or convection?
Although some of the cooking in a grill is baking or roasting, the nature of grilling is radiation. To demonstrate that, put metal between your heat source and the meat and it will cook differently.
Does an electric grill use conduction convection or radiation?
Depending on the scenario, it could be an example of all three, but the most common transfer of energy through heat associated with a heating iron would be conduction. If this is for school and it is possible to have more than one answer, then it would be conduction and radiation.
How are convection and conduction different from radiation?
Both convection and conduction heat transfer need a medium (for example air particles, water, metal) through which to travel along with a temperature gradient within the medium. Radiation heat transfer does not need a medium through which to travel, it actually occurs most effectively in a perfect vacuum environment. Radiation is not just the heat from the sun, although the sun does in fact radiate heat. Everything around you is currently radiating heat as well (for example humans, computers, furniture, books, food, etc.)
What is the name of the process by which heat is transferred through the walls of a oven?
Heat is transferred by convection and by radiation in a conventional gas oven. In an electric oven heat is transferred by radiation only. In a microwave oven, radar waves bombard the molecules within food, bouncing them around enough that the friction produced causes heat to build up within the food.
How does a vacuum bottle keep food hot or cold?
The main idea is to reduce the heat transfer out of the vacuum bottle, or into it. A vacuum greatly reduces the transfer of heat by conduction and convection, while the mirror reduces heat transfer by radiation.
Why does heat from a grill travel to the food through radiation and not conduction or convection?
Although some of the cooking in a grill is baking or roasting, the nature of grilling is radiation. To demonstrate that, put metal between your heat source and the meat and it will cook differently.
Does an electric grill use conduction convection or radiation?
Depending on the scenario, it could be an example of all three, but the most common transfer of energy through heat associated with a heating iron would be conduction. If this is for school and it is possible to have more than one answer, then it would be conduction and radiation.
How does convection affect a stir fry?
Food is heated by conduction and convection.
Is using air circulations to cook food conduction?
No, it would be convection: because the energy is circulating, due to heat differential (convecting), through the air.
How does the oven cook?
It uses heat convection to cook food.
What does it mean when a microwave oven uses convection microwaves?
A convection microwave uses both microwaves and convection heating to cook the food. The convection cooking allows the food to be browned and cooks the outer part of the food while the microwaves cook the interior of the food.
How does convection and conduction affect stir fry vegetables?
In actual fact stir fry is both conduction & convection, this is because the food is getting hot by conduction But then it is convection as you generally put water or something in it.
Is an egg frying in a pan conduction?
This is a more complicated question than you might expect. There are three basic way heat moves, convection, radiation, and conduction. Convection moves heat around by the rising and falling (currents) of some medium like air or water. The currents form, because heated material (in general) is less dense than cooler material. Therefore, convection *never* happens in the absence of gravity. Radiation is always in the form of light, specifically infrared. The warmth you feel when sunlight touches your skin is this kind heat. Lastly, there's conduction where heat moves from one thing to another by contact. Frying pan cooking (dry) primarily uses conduction, but radiation and convection do play roles. Frying pan cooking (with oil) primarily uses convection, but conduction is involved if the food sticks to the bottom.
How a campfire and microwave are examples of heat transfer through radiation?
Standing next to a campfire you will be warmed by its radiant heat (IR radiation).However a microwave cooker generates heat by boiling water inside the food, then the steam heats the food by a combination of conduction and convection (not radiation). There is some trivial heating of the microwave cooker's walls by IR radiation from the hot food, but this is so trivial you will not be able to measure it and the steam from the food will still condense on the cold walls (which is transfer through convection and warm them more than the IR radiation did).Note: microwave radiation is NOT thermal radiation (IR radiation) and must be transformed to become heat.
How does a conduction oven work?
If you mean a convection oven, it circulates the warm air by use of a fan, eliminating hot spots and allowing food to cook faster and more evenly at a lower temperature.
Why is knowledge of conduction important?
its not as long as you cook your food properly
What are good forms of radiation?
Radiation helps us cook our food!!
