What must happen for heat to be transferred by convection answers?

What must happen for heat to be transferred by convection answers?

Answer: The heat transfer by convection requires a solid-fluid interface, a temperature difference between the solid surface and the surrounding fluid and a motion of the fluid.

How is heat transferred due to convection?

Convective heat transfer is the transfer of heat between two bodies by currents of moving gas or fluid. In free convection, air or water moves away from the heated body as the warm air or water rises and is replaced by a cooler parcel of air or water.

Does convection heat transfer require a medium?

Convection requires a medium to transfer heat through movement of a fluid (gas or liquid.)

How does conduction transfer heat?

Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. These vibrating molecules collide with their neighboring molecules, making them also vibrate faster. As these molecules collide, thermal energy is transferred via conduction to the rest of the pan.

Where does convection happen?

mantle
Convection currents in the Earth occur in the mantle. The core of the Earth is extremely hot, and material in the mantle close to the core is heated…

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 convection process?

convection, process by which heat is transferred by movement of a heated fluid such as air or water. Forced convection involves the transport of fluid by methods other than that resulting from variation of density with temperature. Movement of air by a fan or of water by a pump are examples of forced convection.

What is required for convection?

Answer: Heat source is required for convection to occur. Convection is the transfer of heat due to the bulk movement of molecules within fluids including molten rock . Convection includes sub-mechanisms of advection , and diffusion.

What must happen for heat to be transferred by Convenction?

Convection heat transfer takes place if a fluid moves over a solid surface or in the vicinity of it, given that there is a difference in temperature between the fluid and the solid surface. In fact, the convective heat transfer is a kind of energy transfer between a solid surface and the moving fluid in its vicinity, which combines the effects of conductivity and fluid motion.

Does heat rise or fall during convection?

Convection is the transfer of heat by movement of a fluid such as air. Convection happens in the atmosphere when air near the Earth’s surface is heated. This heating causes the air to expand, become less dense than the surrounding air, and rise . The heated air is buoyant and transports heat energy upward.

What causes convection in water or air to heat up?

Not all particles heat up the same way. Uneven heating can result in convection, both in the air and in water. This causes currents in the atmosphere (wind) and in bodies of water on earth which are important factors in weather and climate.

What does it mean for heat to be transferred by convection?

Convection is heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it. Convection above a hot surface occurs because hot air expands, becomes less dense, and rises.