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Heated fluid rises due to the process of convection, where the warmer fluid becomes less dense and therefore more buoyant than the surrounding cooler fluid. This buoyancy creates an upwards force, causing the heated fluid to rise while the cooler fluid sinks to replace it.

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1y ago

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Do molecules rise or sink after they are heated?

When molecules are heated, they increase in kinetic energy and tend to rise due to decreased density. This is because as a substance is heated, its molecules spread out and become less dense, causing them to rise in a fluid medium such as air or water.


What is the word Transfer of thermal energy when particles in a heated fluid rise?

Convection.


When a fluid is heated does it rise or expand?

When a fluid is heated, it expands. This is because the particles within the fluid gain energy and move more rapidly, increasing the distance between them. The expansion of the fluid is often accompanied by a decrease in density.


What causes fluids to sink and rise?

Fluids sink and rise due to differences in temperature and density. When a fluid is heated, it becomes less dense and rises, while cooler fluids are denser and sink. This movement of fluids is known as convection.


Why does heat rise in a fluid or gas?

Heat rises in a fluid or gas because when the fluid or gas is heated, its molecules gain energy and move faster, causing them to spread out and become less dense. This decrease in density makes the heated fluid or gas less heavy than the surrounding cooler fluid or gas, causing it to rise.


Why doesnt convection occur when a beaker is heated at the top?

Convection occurs when heated fluid rises and cooler fluid sinks, creating a continuous circulation. If a beaker is heated at the top, the heated fluid near the top would rise but due to cooler fluid at the bottom, the circulation does not sustain itself, thus preventing convection from occurring.


Why do gases and liquids rise when heated?

Gases and liquids rise when heated because the increase in temperature causes the particles in the substance to gain energy and move faster, leading to a decrease in density. This causes the heated substance to become less dense than its surroundings, resulting in it rising.


What happens to the heated fluid if it is warmer than the fluid around it?

If the heated fluid is warmer than the fluid around it, it will generally rise due to its lower density. This movement is known as natural convection, where the warmer fluid displaces the cooler fluid and creates circulation in the system.


Why does the material in the asthenosphere rise as it is heated?

The material in the asthenosphere rises when heated because of its reduced density. As it absorbs heat, the material becomes less dense compared to the cooler surrounding rocks. This buoyant force causes the heated material to rise towards the surface.


What force causes things to rise or float?

Buoyancy is the force that causes things to rise or float in a fluid, such as water or air. This force is exerted in the opposite direction to the force of gravity, making objects appear to be lighter when submerged in a fluid.


Does heated air rise or sink?

Heated air rises because it becomes less dense compared to surrounding cooler air. This difference in density creates a buoyant force that causes the air to move upwards.


What is the movement of a heated fluid?

When a fluid is heated, it becomes less dense and tends to rise while cooler fluid sinks to replace it, creating a movement known as convection. This movement helps to transfer heat throughout the fluid by circulating hot and cold regions. The process continues as long as there is a temperature difference driving the fluid movement.