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How do convection currents work in the mantle?
What forces would lead to the movement of the plates over the surface of the earth? At this time it is believed this movement results from mantle convection. Deep within the earth there is a large amount of heat coming from two sources: the magma remnants of the Great Bombardment, and radiation from radioactive elements. This heat, in accordance with the 2 ndlaw of thermodynamics, must flow to a cooler place, and subsequently rises to the surface of the Earth. If the Earth were smaller, this heat would flow by conduction, but because of the relatively large size of the Earth, convection also takes place. Thus, as in heating a pot of water on a stove, convection currents are established within the earth, which bring warm material to the surface and send cooler material to the interior.
If the SA node fails to fire what takes over?
If the SA node fails to fire the atrioventricular node should take over.
How is putting wet shoes over a floor radiator a good example of convection?
it is in direct contact which is heating it up
Can you be signed of by a chef if you have been cooking in a kitchen over a long time?
yep but it depends on if your food has the look like is has to be neatand would of have to had experience cooking for a chef
What is a mantelpiece?
A piace of wood or stone that goes over a fire place.
What are some examples of heat transfer by conduction convection and radiation in everyday life?
A example of conduction is: picking up a hot bowl of soup, putting a marsh mellow over a fire, and putting ice in a HOT glass of water.Conduction: Touching a hot stove and being burned.Convection: Hot air heating/rising, cooling, and falling (same with water).Radiation: Heat from the sun warming your face.Find more examples at Yahoo Answers!
Is cooking a hot dog over a campfire radiation or conduction?
radition
Is a pan over a flame radiation or conduction?
Both the flame heating the pan and the pan heating the water are examples of conduction. Convection is when the molecules of water heat other molecules of water.
Why a spoon is getting heated over a fire?
A spoon over a fire would would be heated from convection, because convection is when hot air rises and cold air falls which is known as a convection current.
How does conduction and convection are affected by paving over a grass field?
It is harmful and effects the air pollution
Is convection faster then conduction?
In general, convection is faster than conduction because it involves the movement of a fluid (liquid or gas) that can transfer heat more quickly than the direct contact between materials in conduction. Convection relies on the transfer of heat through the movement of the fluid, which can be a more efficient process for heat transfer over long distances.
What three processes transfer heat over earths surface?
The three processes that transfer heat over Earth's surface are conduction, convection, and radiation. Conduction is the transfer of heat through direct contact between materials. Convection is the transfer of heat through the movement of fluid (liquid or gas) caused by temperature differences. Radiation is the transfer of heat through electromagnetic waves, such as from the sun to Earth.
What type of heat transfer is roasting a marshmallow in a camp fire?
Convection, and radiation with a small amount of conduction cooks the marshmallow. The primary heat transfer is convection from the hot gasses passing over the marshmallow.
What is the optimal temperature for cooking over a wood fire?
The optimal temperature for cooking over a wood fire is typically between 400-500 degrees Fahrenheit.
Where did the art of cooking begin?
Back in the cavemen times. They learned how to make fire, and they roasted their meat over the fire. That is cooking.
Is a hairdryer a form of conduction?
No, a hairdryer is not a form of conduction. Conduction is the transfer of heat through direct contact between two objects or substances. A hairdryer uses convection, which is the transfer of heat through a fluid (such as air) moving over an object.
Why solid are preferred in conduction over liquid and gases?
A liquid or gas will also conduct. However, in gases or liquids, the analysis becomes more complicated, because there is not only conduction, but also the possibility of convection.
