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At the bottom of a substance, part of it is heated by something. This causes it to rise above the rest. However, it soon cools and drops back down again where it is then heated, etcetera. This forms a constant current of part of the substance rising then dropping and repeating.
What else can I help you with?
What are the roles of density and temperature in convection?
Density and temperature play key roles in convection. As air or liquid is heated, its density decreases, causing it to rise. Cooler, denser air or liquid then moves in to take its place, creating a convection current. This cycle allows for the transfer of heat through the movement of the fluid.
How Convection takes place because cold air?
Convection occurs when cold air becomes denser than warm air, causing it to sink. As the cold air descends, it displaces the warmer air, which then rises to take its place. This continuous cycle creates a convection current, facilitating the transfer of heat. In this process, the movement of air helps distribute thermal energy throughout the environment.
Is convection current kinetic energy before transferring?
In a convection current the kinetic energy will most likely be a small part of the total as the rate of flow won't be very high. Most heat transfer in convection will be simply thermal energy transfer, ie from a warmer place to a cooler one.
How does convection take place in your boiler?
In a boiler, convection occurs when heated water or steam rises naturally due to its lower density, creating a convection current. This helps to transfer heat from the combustion gases to the circulating water or steam. The heated water or steam then moves towards the radiators or other heat transfer surfaces, releasing heat and cooling down to create a continuous cycle of convection.
When an electric current is passed in an electrolytic cell how can we make out that electrolysis is taking place?
Electrolysis in an electrolytic cell can be identified by observing the production of gas bubbles at the electrodes, indicating a chemical reaction is occurring. Additionally, changes in the color of the electrolyte solution or the deposition of solid material on the electrodes can also signal electrolysis. A measurable change in voltage or current can further confirm that the process is taking place.
What does the word occurred means?
Happening/taking place.
Where is an current exploration taking place today?
There is a current exploration taking place in Afghanistan in the caves
What is recurence?
Recurrence means happening or taking place again.
What is another word for happening right now?
Another word for "happening right now" is "ongoing." You could also use "current" or "contemporary" to convey a similar meaning. These terms indicate that something is taking place at the present moment.
What happening when the cell starts to swell up with water?
Osmosis is taking place.
Is there genocide happening in Sri Lanka?
N0 there is not genocide taking place in Sri Lanka.
Are genocides happening now?
Genocide is currently taking place in the Darfur region of Sudan.
When did your current recession end?
It did not end! If it is "current", that means it is taking place now. -121lilacs
Why can convection of current not take place when solids are heated?
Convection requires the movement of a fluid medium to transfer heat. Since solids do not have the ability to flow like liquids or gases, convection of current cannot take place in solids when they are heated. Heat can still be transferred through conduction in solids, where it is transferred from one molecule to another through direct contact.
What are the two layers of earth in which convection current takes place?
Mantle is one, and I'm gonna guess core.
Difference between conduction current and displacement current?
Conduction refers to electrons or, "holes" in the case of semiconductors, which are conducted, under the influence of an electric field, from one place to another. However, in semiconductor there is a phenomenon called "drift current" which is more a function of very small field and random motion from one place, within the material, to another place. But neither of these is ever referred to as a "convection" current. The term "convection" is used in connection with air currents moved by differences in temperature between one place and another. Hot air tends to rise while cold air tends to fall. Consequently, a circulation of air, due to temperature is called a convection current.
Is war still happening today?
There are wars taking place today, especially in the middle east (Syria, etc).
