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radiant heat
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What is a convection current caused by?
The liquid or gas which transfers the heat can circulate round and round between the hot and cold regions. The flow of liquid or gas is called a convection current. Convection currents are caused by changes in density.
What would happen to the convection currents in the mantle if earth's interior eventually cooled down?
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.
Why do convection currents happen in the mantle?
The convection currents are a result of heat from the interior of the Earth. The rock of the upper mantle known as the asthenosphere is plastic-like but not molten. It acts like a conveyor belt, moving heat from Earth's interior upward, and cooled material downward in a big loop. New crust is created where mantle material reaches the surface at places called mid-ocean ridges. Older, colder oceanic crust is subducted and drawn into the mantle, completing the loop.
What causes mantle convection?
Heating from the Earth's core drives convection in the upper mantle. This convection is extremely slow; the speed with which material in the Earth's crust spreads from the mid-ocean ridges is of the order of several cm per year. Nevertheless, it is evident that the same forces which drive convection in the atmosphere and in the ocean are present in the "solid" earth as well. Mantle convection is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior of the Earth to the surface. Mantle convection is the slow creeping motion of Earth's solid silicate mantle caused by convection currents carrying heat from the interior of the Earth to the surface.
What causes the plates to move and the sea floor to spread?
Convection Currents: The difference in temperature between the upper and the lower mantle creates these currents that causes magma to rise up through the mantle and out the crust.
What is a convection current caused by?
The liquid or gas which transfers the heat can circulate round and round between the hot and cold regions. The flow of liquid or gas is called a convection current. Convection currents are caused by changes in density.
What are convection currents responsible for?
Convection currents are responsible for the movement of heat (and mass) within a fluid system. Heat wants to go from where it is to where it isn't. When atoms and or molecules of a fluid (a gas or liquid, for example) are hotter then their companion particles, they are less dense and rise in the fluid. Cooler, more dense groups of atoms or molecules take their place. Convection currents are thus set up, and heat travels "around" the system via those currents. A link to the Wikipedia article on convection is provided.
What heat transfer occurs in asthenosphere?
It's where the plates of the lithosphere move around on, the plastic like layer of the asthenosphere. the plates move around on these
What form of energy leads to convection currents?
the form of energy would be heat. convection currents are caused by uneven heating of air or fluid. The warmer fluid is more boyant than the cooler fluid, so it floats to the top, and creates a "convection current"
How does temperature affect odour-smell?
Heat causes convection currents in the air, these currents carry the oudour particulates aroudn the room and eventually to a perosn to smell. Heat will cause the odour to spread out more thinly.
What would happen to the convection currents in the mantle if earth's interior eventually cooled down?
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.
Why are there three convection currents in the asthenosphere?
There way more than that.
How does the process of convection rely on radiation?
It relys on it because convection are the air currents that have to be heated by something, so you need objects to radiate heat to heat up the air to start the current
Would lava flow on Earth in a vacuum?
Yes. In fact the lava would cool more slowly as it would not lose heat though convection.
When you heat water by which method heat travels in water?
There is more than one way to heat water, so I would not apply this to all situations, but in general, when you heat water you create convection currents which cause the hotter water to mix in with the colder water.
What makes the strong winds on earth?
Strong winds result from convection currents in the air, which result from sunlight, which for various reasons will heat some air more than other air.
How are convection currents important in the Earth's system?
Deep, cold-water currents play an important role in creating the ocean oasis of the film. Convection currents play a role in the circulation of fluids. Convection currents are the result of differential heating. Lighter (less dense), warm material rises while heavier (more dense) cool material sinks.
