The three main factors that are responsible for setting convection currents in motion are the cooling and heating of fluid, any changes to their density and the force of gravity. These factors combine to set the currents in motion.
The three factors that set convection currents in motion are: the heating and cooling of fluid, change in its density, and the force of gravity combine to set it in motion.
The three factors that set convection currents in motion are: the heating and cooling of fluid, the change in it's density, and the force of gravity.
Surface currents are set in motion by a combination of factors such as wind, the Earth's rotation (Coriolis effect), and differences in water density due to temperature and salinity variations. These factors create a complex system of ocean currents that circulate water around the globe.
the convection currents will be set in motion because the heat from the mantle rises and causing it to change Earth's density & force of gravity
the heating and cooling of fluid, changes in its density, and the force of gravity combine to set it in time
the convection currents will be set in motion because the heat from the mantle rises and causing it to change Earth's density & force of gravity
Changes in a fluid's density create density differences within the fluid, which in turn lead to buoyancy forces. When subjected to gravity, these buoyancy forces cause the warmer, less dense fluid to rise and the cooler, denser fluid to sink, thus setting convection currents in motion. Together, these factors drive the circulation of fluids through the process of convection.
Unequal heating of Earth's surface: Differential heating of the Earth's surface by the sun creates temperature and pressure differences that drive convection currents. Rotation of Earth (Coriolis effect): The rotation of the Earth causes moving air or water to be deflected, which influences the direction of convection currents. Gravitational force: Gravity plays a role in pulling denser, cooler air or water downwards, while lighter, warmer air or water rises, initiating convection currents.
Matter doesn't move easily in solids.
If you are heating water in a pan on the stove, the water at the bottom of the pan will warm first. Since warm water is lighter, it will rise, and cool water from the top will flow down to replace it. This is called convection, and will continue until all the water is hot. Convection currents can occur in large bodies of water, in the atmosphere, or beneath the earth's crust. All that is needed is a warmer, lighter fluid below a cooler, heavier one.
Convection currents in air are set up by the unequal heating of the Earth's surface. When a portion of the Earth's surface is heated more than another, the warm air rises, creating a low-pressure area. Cooler air then moves in to fill the void, creating a convection current.
If the mantle of the earth interior were to cool down the convection currents and plate tectonics would stop. That would mean that there would be no more earthquakes or volcanoes.