Example: air near the ground on a hot day is heated by the hot surface. It therefore expands, so its density falls and it rises to be replaced by the coolder air above it. After a while in contact with the cooler air higher up it stops rising and merges with the atmosphere, so a cycle is set up. This cycle is called convection.
Convection is defined as the transfer of heat through a fluid,(liquid, or gas form) caused by motion of molecules. A pot of water on the stove, warms through the process of convection.
Energy transfer by convection is primarily restricted to fluids. One of the significant modes of heat transfer is convective heat transfer.
convection
A hair dryer will use convection.
It relys on it because convection are the air currents that have to be heated by something, so you need objects to radiate heat to heat up the air to start the current
particles move faster
convection
The flow of mantle effects convection currents in the mantle. This process happens as hot material within the mantle begins to rise. As it rises, it begins to cool and then sinks. This process repeats as a cycle of convection currents.
Convection happens due to the transfer of heat by the motion of a heated fluid such as air or water.
During convection, hot material rises due to its lower density, creating a convection current. As the material moves to the side, it cools down, becomes denser, and eventually sinks, completing the circular pattern of convection. This process is driven by temperature differences within the fluid.
During convection, particles in a fluid gain kinetic energy, become less dense, and rise. As they rise, they transfer heat through the fluid by bumping into other particles. Once they cool down or lose energy, they become denser and sink back down, creating a continuous circular motion that transfers heat.
convection happens because fluids become less dense and expand and riseas they are heated.
yumm
That happens during the cooking process.
Convection currents
convection
During convection, heat transfer happens through the movement of fluid (liquid or gas) due to temperature differences. As the fluid near a heat source gets warmed up, it becomes less dense and rises, while cooler fluid sinks to replace it. This creates a continuous circulation pattern that helps to equalize temperatures within the fluid.