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Convection is the bulk movement of the liquid under the driving force of density differences in the liquid. It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances. Direct link to Anisha's post can you identify and give, Posted 5 years ago. 4 facts about convection The outer core is the third layer of the Earth. Simulation of thermal convection in the Earth's mantle. Convection is the heating process by which heat travels through air, water, and other gases. This extra movement allows the molecules to spread apart a little. It seems quite simple, but it might lead to severe weather in some conditions. Blood Circulation in Warm-Blooded Mammals. In contrast, convection occurs in the upper mantle due to increased pressure that forces rocks to flow like plastic. lessons in math, English, science, history, and more. When this happens, hot fluids rise and cold fluids sink. In engineering, convective heat transfer is one of the major mechanisms of heat transfer. As the gas or liquid rises, it transfers heat up and away. Convection occurs when hot air rises, allowing cooler air to come in and be heated. The movement of the clouds, the ocean currents and many types of heaters are examples of convection. The greenhouse effect increases warming further. 'Cause hot air, these particles have a much higher kinetic energy and so they're gonna bump into each other and they're gonna push each other much further away and get more seperation from each other because of that high average kinetic energy. Atmospheric circulation, for example, is made by convection currents. Convection Currents Overview & Examples | What are Convection Currents? This circular movement of fluid continues till the other sections are also heated up and rise to be replaced by the cooler upper layer. In meteorology, the process in which air, having been warmed close to the ground, rises. Key Information & Summary. 10. Direct link to bruhmastir's post where do these particles-, Posted 4 years ago. The lower hotter fluid (liquid or gas) becomes less dense. And that's why it looks like these flames are kind of, they're moving upwards, they're kind of flickering upwards. Conduction Facts That Will Help You Learn This Scientific Concept Facts About the Divergent Plate Boundary Explained with a Diagram Convection is important since it can affect the . Other phenomena affected by convection currents include the production ocean currents and wind in the atmosphere.