The bottom of the Earth. :)
heat flow values
Asthenosphere
Some is fossil heat, some from radioactivity.
The convection currents will eventaully stop because there is no heat to keep them moving.
convection
from the bottom of the earth
heat flow values
Convection currents in the magma drive plate tectonics.Heat generated from the radioactive decay of elements deep in the interior of the Earth creates magma (molten rock) in the aesthenosphere.
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
In the mantle, there is a fluid-like layer called the asthenosphere which has convection currents, due to the heat of the inner core. Earth's plates are hypothetically "floating" on the asthenosphere. The currents in this layer push whatever is on top of it, thus the continents move.
Some is fossil heat, some from radioactivity.
The difference in temperature and density is the cause of convection currents in the earths mantle. Convection currents are the flow that transfers heat within a fluid.
The difference in temperature and density is the cause of convection currents in the earths mantle. Convection currents are the flow that transfers heat within a fluid.
The convection currents will eventaully stop because there is no heat to keep them moving.
The grinding of tectonic plates. This caused by the outer core sending heat to the asthenosphere. The heat creates convection cells (aka convection currents), which move the asthenosphere. The tectonic, or lithospheric, plates are floating on the asthenosphere. When the asthenosphere moves, the tectonic plates move, and they gring together. The grinding will eventually cause a tectonic plate to fracture, which releases energy through the earth as seismic waves, and an earthquake occurs.
Heat from the core and the mantle itself causes convection currents in earth's mantle.