Answer :
In liquids and gases, heat transmission is primarily caused by A. convection.
Convection is the transfer of heat through the movement of the heated substance itself. When a liquid or gas is heated, its particles gain energy and become less dense, causing them to rise. As they rise, cooler particles take their place, creating a continuous circulation of heat. This process allows the heat to spread throughout the substance.
Imagine a pot of water on a stove, as the stove heats the bottom of the pot, the water molecules closest to the heat source gain energy and become less dense. These molecules rise to the top of the pot, while cooler molecules sink to the bottom. This movement creates a convection current, where hot water rises and cool water sinks. As a result, the heat is transferred from the bottom of the pot to the entire volume of water through convection, this is why convection is the primary mode of heat transmission in liquids and gases, so the correct answer is A. convection.
Learn more about convection at:
https://brainly.com/question/9382711
#SPJ11
