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Substances that have internal movement(gas, liquid, and solids to a certain degree) will have convection currents. The concept is most easily understood in a gas. As gases are heated their molecules travels faster and faster. The faster they move and the more the kinetic energy involved in the collisions causes the gas to increase in volume. This means that the particles are further apart and therefore the density of the gas decreases. And substances with lower density will rise. This can also be thought of as kinetic and potential energies. As the gas is heated the molecules inside have increased kinetic energy. The increased energy of the molecules allows the molecule to reach higher potential energy levels(which means the molecule can rise).

jacquie s has a science test tomorow Hope that helps.

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When air is heated the gases speed up and?

expand, causing the air to become less dense and rise.


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.


As the earth is heated by the sun bubbles of rise blank blank upward from the warm surface?

As the earth is heated by the sun, bubbles of air rise upward from the warm surface.


When happens when cooler air and heated air interact?

The cool air will sink and the warm air will rise.


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.


A decrease in density as air is heated causes it to rise above coolermore dense air. truefalse?

True. As air is heated, it becomes less dense and rises above cooler, more dense air. This is due to the decrease in air density causing it to become buoyant and rise.


Why does a hot air balloon rise when the air inside it is heated?

When the air inside the balloon is heated, it becomes less dense than the surrounding cooler air. This density difference creates a buoyant force, causing the balloon to rise. As long as the air inside the balloon is heated, it will continue to rise.


Heated air that is lighter than surrounding air will do what?

Heated air that is lighter than surrounding air will rise, as it is less dense. This process creates convection currents, with cooler air moving in to replace the rising warm air.


When air is heated what Will most likely happen?

When air is heated, it will expand and become less dense. This causes it to rise, creating convection currents. As the heated air rises, cooler air will flow in to replace it, leading to changes in temperature and pressure in the surrounding environment.


Why does heated air rise?

Heated air rises because it becomes less dense and more buoyant than the surrounding cooler air, creating a pressure difference that causes it to move upward.


Why does a balloon need hot air?

A balloon needs hot air to make it rise because hot air is less dense than cold air. When the air inside the balloon is heated, it becomes lighter and causes the balloon to lift off the ground and float in the air.


How does lifting by heat cause air to rise?

Heating the air makes it less dense and lighter than the surrounding cooler air, causing it to rise. As the heated air rises, it creates a convection current where cooler air rushes in to replace it, leading to a continuous upward movement of the heated air. This process is known as thermal convection.