High institution Physics help » Thermodynamics » heat » understanding the principle of energy Transfer
Explanation:

Microwaves usage radiation together the technique of warm transfer. Radiation advert to heat transfer via electromagnetic waves, such as microwaves.

You are watching: The transfer or movement of heat between two objects that are touching is

Conduction is warmth transfer via straight contact between two objects. Convection is warmth transfer via the activity of bordering fluids. Induction is not a kind of warm transfer.


Explanation:

Convection is warmth transfer via the movement of surrounding fluids. Though conduction may be used to heat the pot, and in turn to warm the water molecules in contact with the edge of the pot, convection occurs within the pot to transfer heat in between the water molecules. This enables the water to heat evenly. Without convection developing within the pot, the water at the outer edges would be much hotter 보다 the water at the center.

Radiation advert to warmth transfer via electromagnetic waves. Conduction is heat transfer via direct contact in between two objects. Induction is no a type of warmth transfer.


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Example question #591 : High school Physics


A item of ice is put on a hot surface and also begins to melt, but its temperature does not increase. What form of heat transfer is this?


Possible Answers:

Induction


Radiation


There is no heat transfer


Convection


Conduction


Correct answer:

Conduction


Explanation:

Heat is a type of energy, and can be offered to transform the power of chemistry interactions. Ice, a solid, will be in a lower power state than water, a liquid. The enhancement of warmth energy allows for the boost in phase energy from solid to liquid. The energy enhancement is converted to a various form; thus, the temperature does not change. Conduction is heat transfer via straight contact between two objects, which explains the transfer in between the hot surface and also the ice.

Radiation refers to warmth transfer via electromagnetic waves, such as microwaves. Convection is warm transfer via the movement of neighboring fluids. Induction is no a form of warmth transfer.


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Example inquiry #4 : knowledge The principle Of energy Transfer


A item of tin sitting on a stove top becomes really hot. What kind of warmth transfer to be involved?


Possible Answers:

Induction


Convection


Radiation


There is no warm transfer


Conduction


Correct answer:

Conduction


Explanation:

Conduction is warmth transfer via direct contact in between two objects. Together the piece of tin is in direct call with the stove, heat deserve to freely flow from the stove into the tin, bring about it to come to be hotter.

Radiation advert to heat transfer via electromagnetic waves, such as microwaves. Convection is warm transfer via the activity of surrounding fluids. Induction is not a kind of warmth transfer.


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Example concern #5 : understanding The ide Of power Transfer


On a cold day, the temperature frequently feels colder due to a wind chill. This is an instance of what kind of phenomenon?


Possible Answers:

Conduction


None that these


Radiation


Induction


Convection


Correct answer:

Convection


Explanation:

On a cold day, the air temperature is much less than her body temperature. Together cold wind comes in contact with your body, warm is transferred from her body to the air moving past, making you colder. This form of heat transfer is well-known as convection, in which heat is moved from an item (your body) to a liquid medium (the air).

Conduction is heat transfer early to straight contact in between objects. Radiation is heat transfer as result of electromagnetic waves. Induction is no a kind of warm transfer.


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Example question #6 : expertise The principle Of power Transfer


A item of bread is burned on one side and also uncooked top top the other after being heated in a toaster. What was the many likely type of warmth transfer to cause the burn?


Possible Answers:

Convection


Induction


We must know an ext information to reach a conclusion


Radiation


Conduction


Correct answer:

Conduction


Explanation:

Conduction is a type of heat transfer requiring straight contact between two objects. In the question, the shed side the the bread was likely in direct contact with the warmth source, while the other was only in call with warm air. The shed side is heated by conduction, while the uncooked side is cook by convection.

Convection is the move of heat through a liquid medium, specific a liquid or gas. Radiation is the deliver of warm through electromagnetic waves.


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Example inquiry #7 : understanding The concept Of energy Transfer


Which that the adhering to methods of warm transfer requires the 2 objects to be touching?


Possible Answers:

Thermodynamic discharge


Radiation


Conduction


Convection


Induction


Correct answer:

Conduction


Explanation:

Conduction is the type of warmth transfer the requires straight contact between two objects.

Radiation is heat transfer via electromagnetic radiation. Convection offers a liquid medium, such together air or water, for heat transfer. Induction and also thermodynamic discharge space not recognized types of heat transfer.


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Example concern #8 : knowledge The ide Of power Transfer


A marshmallow top top a pole is placed above a fire, but not poignant the fire. The marshmallow heats up and also softens. Just how is the marshmallow gift heated?

I. Conduction

II. Convection

III. Radiation


Possible Answers:

III only


II only


II and also III


I, II, and also III


I and also II


Correct answer:

II and III


Explanation:

Conduction wake up when heat is moved by direct contact in between two objects. Convection wake up when warmth is transferred via contact between a fluid and an object. Radiation is warmth transfer via electromagnetic radiation.

In this question, the fire is a resource of heat and electromagnetic radiation. Once the radiation indigenous the fire effects the marshmallow, that is being heated by radiation. The fire is likewise heating the neighboring air, producing fluid currents. The heated air is additionally transferring power to the marshmallow, heating by convection.

There is no conduction in this example.


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