It'll stop flowing when all of the material has reached th same temperature.
Sand because molecules stay heated within.
A chemical reaction has ocurred her and it has now formed a compund.
Limestone loses mass when heated because of a chemical change: the gas carbon dioxide (CO2) is released by a chemical process when the rock is heated. The heat turns some of the calcium carbonate of the limestone into calcium oxide (quicklime) and carbon dioxide.
A sulphur well is where super heated steam is pumped into an underground sulphur deposit. The sulphur then liquifies and is then pumped to surface. This method is no longer employed since the introduction of low sulphur fuels. More than enough sulphur is removed from crude oil to meet world demand.
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.
the currents would stop as soon as the heated substace has cold completely.
It falls back down
Nothing actually happens to convection currents when heat is no longer supplied. The currents are produced by applying heat, most often to the bottom. The warmed fluid is 'lighter' than the cold fluid surrounding so it rises to allow colder fluid to replace it and be heated. As soon as the heat is removed, all the fluid rapidly comes to a single temperature and convevtion does not happen! An opposite effect happens when cold air sits on the surface of a lake. In this case the water at the surface cools, gets 'heavier' and sinks. In this case the convection currents operates downwards.
Nothing actually happens to convection currents when heat is no longer supplied. The currents are produced by applying heat, most often to the bottom. The warmed fluid is 'lighter' than the cold fluid surrounding so it rises to allow colder fluid to replace it and be heated. As soon as the heat is removed, all the fluid rapidly comes to a single temperature and convevtion does not happen! An opposite effect happens when cold air sits on the surface of a lake. In this case the water at the surface cools, gets 'heavier' and sinks. In this case the convection currents operates downwards.
The conventional currents will continue until the temperature of the substance is equal to surrounding temp.
so that the heated particles cannot escape-convection :)
Water'specific heat capacity is 4200 J/Kg°C . This high specific heat capacity suggests that the water will travel long distances without losing heat . This makes the convection currents in the air last longer.
The Pangaea super-continent no longer exists because it has broken up into the continents that exist today, as a result of continental drift caused by convection currents in the earth's mantle.
When an enzyme is heated it is denatured, which means that it can no longer function.
Being designed to radiate (give out/emit etc) the thermal energy of the hot water inside them, a convection radiator will heat the air above itself. As the gas is heated it expands (thermal energy is "converted" to kinetic energy and hence the molecules move faster and hence expand), as the gas expands it's density decreases and so it rises above the cooler, denser gas surrounding it. As more gas is heated the gas will diffuse across the roof of the room and gradually cool. When the gas is initially heated it's original volume is filled by in-rushing cooler gas, this in turn is heated, eventually the original gas, which has recently cooled and descended, is heated once more thus forming a convection current. One of the problems with convection heating of any kind is the tendency for the central areas of large spaces to remain unheated, furthermore longer spaces may not be heated at the far end from the heat source as the gas cools and descends before travelling the length of the space.
Being designed to radiate (give out/emit etc) the thermal energy of the hot water inside them, a convection radiator will heat the air above itself. As the gas is heated it expands (thermal energy is "converted" to kinetic energy and hence the molecules move faster and hence expand), as the gas expands it's density decreases and so it rises above the cooler, denser gas surrounding it. As more gas is heated the gas will diffuse across the roof of the room and gradually cool. When the gas is initially heated it's original volume is filled by in-rushing cooler gas, this in turn is heated, eventually the original gas, which has recently cooled and descended, is heated once more thus forming a convection current. One of the problems with convection heating of any kind is the tendency for the central areas of large spaces to remain unheated, furthermore longer spaces may not be heated at the far end from the heat source as the gas cools and descends before travelling the length of the space.
No, a heated solution will saturate faster.