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Convection needs a fluid. More specifically, convection is the motion of a fluid that is caused by the effects of non-uniform density. In all real examples of convection, the non-uniform density is caused by non-uniform temperature.
If you accept the relationship between temperature and density as a given physical law, then you do not need to talk about molecules in order to explain convection; but if you want also to explain why the density changes with temperature, then you probably will need to talk about the molecular nature of the fluid.
What else can I help you with?
When Flow of heat by direct contact is known as?
False... The flow of heat through direct contact is conduction.
The flow that transfers heat within a fluid?
Convection
How does heat flow in solids and fluids?
Either by conduction or convection?
The transfer of heat between two objects touching is called?
When a cold object and a hot object are in direct contact (touching) heat will be transferred through thermal conduction. Normally, heat transfer processes are categorized as thermal conduction, radiative transfer or convection. Heat transfer through thermal conduction is the direct transfer of kinetic energy from one molecule to the nearby molecules. Because temperature is directly proportional to kinetic energy, interactions between neighboring particles exchange energy and that exchange energy gradually works it way from the higher temperature regions to the lower temperature regions. The process of the temperature becoming the same is called thermal equilibration. Convective heat transfer occurs in fluids. If a gas, liquid, or other fluid, changes in fluid density change the buoyancy and will cause fluid to flow (a process called convection) and the heat contained in the warmer fluid is transferred to a new location by the physical movement of the fluid. Radiative transfer occurs when a hot object radiates electromagnetic energy. While the sun is an obvious source of electromagnetic energy, it is also generated in smaller amounts by any object. The hotter objects radiate more electromagnetic energy and the cooler objects absorb it. This radiative transfer is important but not as noticeable usually as the other two. It does occur between objects whether they are in direct contact or not, but is usually so small as not to be important of the objects are touching.
What is an example of energy flow?
Tide = Flow of kinetic energy from higher ground to lower ground Wind = Flow of kinetic energy from higher pressure to lower pressure Electricity = Flow of electrical energy (transfer of kinetic energy) from higher voltage to ground or low voltage.
Is Convection is the flow of heat energy direct contact between molecules?
Convection is the transfer of heat through the movement of fluids or gases. It does not require direct contact between molecules, as the heat energy is carried by the movement of the fluid itself.
What is the flow of energy from one material to another called?
The flow of energy from one material to another is called heat transfer. Heat transfer can occur through conduction (direct contact), convection (movement of fluids), or radiation (electromagnetic waves).
Is Convection is the flow of heat energy by direct contact between molecules?
No, convection is the transfer of heat energy through the movement of fluids (liquids or gases) due to their different densities. This process involves the physical movement of the fluid to carry heat from one place to another.
Is the flow of heat energy by direct contact between molecules?
conduction
Is the flow of heat energy by direct contact between molcules?
Yes, the flow of heat energy by direct contact between molecules is known as conduction. In this process, heat is transferred from a warmer object to a cooler one through direct physical contact between the particles.
How does energy transfer to another object?
By contact (conduction), by gas or liquid fluid flow (convection), by wave (radiation).
How does the energy in thermal energy flow?
Thermal energy flows from objects at higher temperatures to objects at lower temperatures through the process of conduction, convection, or radiation. In conduction, it moves through direct contact between materials; in convection, it travels through the movement of fluids like air or water; and in radiation, it is emitted as electromagnetic waves.
How is energy transferred from system to system?
Energy can be transferred from one system to another through mechanisms such as conduction (direct contact), convection (through fluid flow), and radiation (electromagnetic waves). These mechanisms allow for the transfer of thermal, electrical, or electromagnetic energy between systems.
What is the difference between conduction and convection?
Conduction is the transfer of heat through direct contact between objects or substances. Convection, on the other hand, involves the transfer of heat through the movement of fluids (liquids or gases). In conduction, heat is transferred through a stationary medium, while in convection, the medium itself moves to transfer heat.
When Flow of heat by direct contact is known as?
False... The flow of heat through direct contact is conduction.
What h is a way of transferring energy when things are different temperatures?
Heat is a way of transferring energy from a hot object to a colder one through direct contact or radiation. The energy transfer occurs until thermal equilibrium is reached, resulting in both objects having the same temperature.
How does heat transfer to one material to another?
it transfers from heat flow
