Table of Contents
Do convection currents require a source of heat?
Convection currents continue as long as heat is added to the fluid. Convection currents flow in the asthenosphere. 1. The heat source for these currents is heat from Earth’s core and from the mantle itself.
How does temperature of a fluid affect convection currents?
The heat energy can be transferred by the process of convection by the difference occurring in temperature between the two parts of the fluid. Due to this temperature difference, the hot fluids tend to rise, whereas cold fluids tend to sink. This creates a current within the fluid called Convection current.
What are 3 facts about convection?
Facts about convection:
- The heat source and liquid are needed to form convection current therefore, heat transfer can be conducted.
- Convection occurs in the atmosphere.
- Magma is considered as the fluid, while the core of the earth is called as the heat source.
- Convection is important since it can affect the weather.
What role does heat play in the formation of convection current?
Convection currents form because a heated fluid expands, becoming less dense. The less-dense heated fluid rises away from the heat source. For instance, a hot radiator heats the air immediately around it. The air rises toward the ceiling, pulling cooler air down from the ceiling into the radiator to be heated.
How is heat energy transferred in a convection current?
The heat energy can be transferred by the process of convection by the difference occurring in temperature between the two parts of the fluid. Due to this temperature difference, the hot fluids tend to rise, whereas cold fluids tend to sink. This creates a current within the fluid called as Convection current.
Due to this temperature difference, the hot fluids tend to rise, whereas cold fluids tend to sink. This creates a current within the fluid called Convection current. The mantle within the earth’s surface flows due to convection currents.
Which is an example of the convection process?
Convection is one among the forms of heat transfers, of which the other two are radiation and conduction. Convection process only happens in the fluids i.e. in liquids and gases. This happens due to the reason that molecules within liquids or gases are free to move.
What causes the convection current in the mantle?
These currents are mainly caused by a very hot material present in the deepest part of the mantle which rises upwards, then cools, sinks, again and again, repeating the same process of heating and rising. Hence, Convection Current is defined as “a process of continuous heating up of liquids or gases by the process called as Convection. “