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What is the role of molecular action in convection and conduction?
Wiki User
∙ 9y ago
The role of molecular action in convection is the that molecules that are relative to one another create kinetic energy that is the end result. The role of molecular action in conduction is that molecules collide with one another to create a transfer of heat or energy.
Wiki User
∙ 9y ago
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What is it when energy from hot cocoa melts a marshmallow placed in it?
This is convection. Convection is the effect you get when hotter parts expand and have lower density than cooler parts. What you describe is "melting", with the temperature of the surrounding liquid being higher than the temperature of the marshmallow. So, heat flows from the hotter region to the cooler by conduction and eventually the temperature reaches the melting point.I'd suggest re-arranging that.Conduction transfers the cocoa's heat into the marshmallow, cooling the liquid in doing so.Convection helps to maintain the process by replacing the cooled cocoa with hot.When you place any chocolate in any fluid at a higher temperature than the melting point of chocolate, the chocolate will melt. Likea lump of ice in warm water. Convection playsno role at all- if you prevent convection by packing the fluid with small pebbles etc, the marshmellow will still melt. The heat is transferred by conduction, not convection.
What three things play a role in convection?
Heat source, fluid density, and constraining factor (ie the glass for a glass of water, thermal gradient for the atmosphere) are three things that play a role in convection.
How are conduction and convection involved in warming or cooling the atmosphere?
"After the land and water absorb solar energy, several mechanisms of energy transfer a role in heating the air. On mechanism is *conduction*.. It is the energetic molecules from the land and water collide with molecules in the air that are close to the surface. There collisions transfer energy from the earths surface to the air. The temperature of the land or water beneath it. Then *convection* occurs as the air circulates and distributes the heat. as the lowest layer of air warms it expands , becoming less dense. so as the warm air rises and cooler air descends and takes its place close to the ground" straight from Science Focus 10 textbook page 380
How the heat energy is transferred from the walls of the kettle?
When you heat water on a stove, thermal energy is transferred. Heat from the stove moves to the water, and then the water absorbs it.
What method of heat transfer plays a central role in transferring heat energy within the atmosphere and the ocean?
Convection does.
What is the atmosphere's role in the exchange of gases on Earth?
The atmosphere exchanges gases by means of convection, radiation, and conduction. This is how energy is transferred between the Earth and the atmosphere.
What is the atmospheres role in the exchange of gases on earth?
The atmosphere exchanges gases by means of convection, radiation, and conduction. This is how energy is transferred between the Earth and the atmosphere.
What is the atmospheres role in the exchanges of gases on earth?
The atmosphere exchanges gases by means of convection, radiation, and conduction. This is how energy is transferred between the Earth and the atmosphere.
What role does heat play in the rock cycle?
Heat energy from the sun causes water to change to a liquid to a gas
The nodal system plays a critical role in heart physiology What is that role?
Normal impulse conduction
What role does the more opaque convection zone play in the Suns interior?
The role that the more opaque convection zone plays in the Sun's interior is transferring energy by moving matter. You can sum that all up in one word; convection. Hope i could help!!!!!!
What method of heat transfer plays the primary role in the formation of an air mass?
Convection is the main heat transfer in the troposphere.
What is it when energy from hot cocoa melts a marshmallow placed in it?
This is convection. Convection is the effect you get when hotter parts expand and have lower density than cooler parts. What you describe is "melting", with the temperature of the surrounding liquid being higher than the temperature of the marshmallow. So, heat flows from the hotter region to the cooler by conduction and eventually the temperature reaches the melting point.I'd suggest re-arranging that.Conduction transfers the cocoa's heat into the marshmallow, cooling the liquid in doing so.Convection helps to maintain the process by replacing the cooled cocoa with hot.When you place any chocolate in any fluid at a higher temperature than the melting point of chocolate, the chocolate will melt. Likea lump of ice in warm water. Convection playsno role at all- if you prevent convection by packing the fluid with small pebbles etc, the marshmellow will still melt. The heat is transferred by conduction, not convection.
What role do convection currents play as you heat a pot of water?
The role convection currents play as you heat a pot of water is transferring heat by movements of a liqiud or a gas because when when convection occurs it occurs in a circular pattern.
What three things play a role in convection?
Heat source, fluid density, and constraining factor (ie the glass for a glass of water, thermal gradient for the atmosphere) are three things that play a role in convection.
The role of the cell in drug action?
lysosomes play a role in drug action...
How is radiation different from conduction and convection?
Radiation does not need any material medium to be propagated. It can even pass through vacuum. Whereas the conduction and convection need the material medium in which the atoms take the important role to transfer heat from one region to the other region.Radiation can transfer energy as heat through empty space.
