When a fluid (liquid or gas) is heated, it expands. The heated fluid is therefore less dense than the fluid around it, so it rises.
Colder fluid then sinks down to replace it and this sets up a movement of fluid called a CONVECTION CURRENT.
Convection
Heat is not a fluid, but rather a form of energy that can be transferred between objects. Fluids are substances that can flow and conform to the shape of their container, such as liquids and gases. Heat can be transferred through fluids, but it is not considered a fluid itself.
Heat conduction is the method that represents the transfer of heat in a fluid. Heat is transferred from particle to particle through direct contact within the fluid.
Heat in a fluid is generally transferred through conduction, convection, and radiation. In conduction, heat is transferred through direct contact between molecules. Convection involves the transfer of heat through the movement of the fluid itself. Radiation is the transfer of heat through electromagnetic waves.
Convection.
Heat energy is transferred through convection when a fluid (liquid or gas) is heated, causing it to expand and become less dense. The warmer, less dense fluid rises and is replaced by cooler, more dense fluid. This creates a circulating flow, transferring heat energy throughout the fluid.
For heat to be transferred by convection, it requires the movement of a fluid (liquid or gas) caused by temperature differences. As the fluid near a heat source becomes warmer, it becomes less dense and rises, displacing cooler fluid that then moves to take its place. This process creates a circulating flow of fluid that transfers heat throughout the medium.
In convection, heat is transferred through the movement of fluid particles, such as air or water. As these particles are heated, they become less dense and rise, while cooler, denser particles sink. This creates a circulation pattern that helps distribute heat throughout the fluid.
Convection currents are the moving currents of fluid that transfer heat. Heat is transferred through the fluid as warmer, less dense fluid rises and cooler, denser fluid sinks, creating a continuous circulation pattern that transfers heat throughout the fluid.
Earth's heat is transferred by convection, which is the movement of heat through a fluid due to differences in temperature. It is also transferred by conduction, which is the direct transfer of heat through a material due to a difference in temperature between two points.
The transfer of heat by the movement of a fluid is called convection. In convection, heat is transferred through the movement of a fluid such as air or water, carrying heat from one place to another.
During convection, heat energy is transferred through the movement of fluid (liquid or gas). Hotter, less dense fluid rises, while cooler, denser fluid sinks, creating a cycle of heat transfer. In conduction, heat is transferred through direct contact between materials, with energy flowing from hot to cold regions.