Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Convection Ashfield Direct Learning Ks4 Energy By Adam Harland What is convection? This is the way heat is transferred in liquids and gases. It depends on, in general, fluids expand when heated and become less dense. This is a domestic hot water tank. Convection Currents A current, called a convection current becomes present in the liquid If heat is supplied. Cooler liquid falls. Warmer, less dense liquid rises. The cycle continues as the heat is supplied Convection Currents The Earth’s lithosphere (the crust) is cracked into a number of large pieces (tectonic plates) which are constantly moving. This is as a result of convection currents within the Earth’s mantle driven by heat released by natural radioactive processes. Radiators The heat from a radiator causes the warm air to rise and as the air rises then it cools and becomes denser. The cool air falls and replaces the warm air which is rising. And the cycle continues until the radiator cools. Conclusion of convection In conclusion convection is: The way heat is transferred in liquids and gasses It depends on, in general, fluids or gases expand when heated and become less dense.