Is conduction possible through vacuum why?

Is conduction possible through vacuum why?

no. conduction can not occur in vacuum because it needs a medium to transfer heat. in vacuum heat can be transferred by the process of radiation.

Why convection and conduction Cannot explain energy transfer from the sun to the earth?

The sun’s light and heat cannot reach us by conduction or convectionbecause space is almost completely empty. There is nothing to transfer the energy from the sun to the earth.

Can conduction and convection happen simultaneously?

Heat transfer is the movement or flow of heat energy. There are three ways in which heat transfer occurs: conduction, convection and radiation. These processes can occur individually or all three can occur simultaneously.

Which condition must exist for conduction to occur between two substances?

This process of exchange of heat is known as conduction. For example, a metal spoon placed in a hot coffee mug shows flow of heat from coffee to the spoon. Thus, we can conclude that a condition which must exist in order for conduction to occur between two substances is that the objects must be touching each other.

Why Cannot heat passed by means of conduction or convection in vaccum?

Vacuum is an empty state, i.e., it does not contain any matter or particles in it. In vacuum, there is no medium for heat to be transferred by conduction or convection, as both these process depend upon the medium (particles), to travel from one end to another end. Thus, heat cannot pass in vacuum.

Why conduction is not possible in liquids and gases?

The answer is simple: their atoms, or molecules that make them up, are closer together, so they can transfer energy between them much more efficiently.

What are the two factors that affects conduction on the earth’s surface?

Thanks to physics, we know that conduction is affected by temperature difference, the area of conduction, the distance the heat must travel, and the amount of time that passes.

Why convection Cannot occur in solids?

Convection not possible in solids because the particles within are too tightly packed to facilitate the process. Convection requires actual movement between the particles within a substance in order to transfer heat which is only possible in a fluid state of matter such as liquid or gas.

Is there any example where all three conduction convection and radiation processes are taking place?

In a fireplace, heat transfer occurs by all three methods: conduction, convection, and radiation. Heat transfer by convection also occurs through cold air entering the room around windows and hot air leaving the room by rising up the chimney.

Which of the following is the example of heat being transferred simultaneously by conduction convection and radiation?

1)A good example would be heating a tin can of water using a Bunsen burner. Initially, the flame produces radiation which heats the tin can. The tin can then transfers heat to the water through conduction. The hot water then rises to the top, in the convection process….

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What is needed for convection?

Convection occurs when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated.

What is the difference between conduction and convection?

Convection and conduction are both mechanisms of heat transfer. The main difference between convection and conduction is that, in convection, heat is transferred through a mass flow of material while, in conduction, heat is transferred through collisions of particles that make up the material.

What is the difference between conduction convection and radiation?

The main difference between conduction, convection, and radiation is that conduction happens due to physical contact of solid when the temperature is increased; convection is a movement of heat energy within the liquid and radiation is a flow of heat energy due to electromagnetic waves.

Which is best compares radiation and conduction?

Conduction is the process by which heat is transferred between two objects through direct physical contact.

In convection heat is transferred by a fluid medium such as a liquid or a gas.

The transition of heat through electromagnetic waves is called radiation.

What is a good explanation for convection?

Convection is the movement of heat because of the movement of warm matter. For example, atmospheric circulation moves warm air to cool places, causing wind. Wind, in turn, can enter and cool a room if the window is open. The movement of the clouds, the ocean currents and many types of heaters are examples of convection.