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Mantle layer with more convection Mantle layer with less convection?
Wiki User
∙ 12y ago
It's mantle with less, then mantle with more as you go deeper into earth.
Wiki User
∙ 12y ago
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When the mantle is heated the magma rises because?
When it is heated it becomes less dense (i.e. lighter). The more dense (i.e. heavier) magma sinks while the less dense magma rises to the top. It will eventually cool again causing a convection current within the mantle.
How does the temperature and density drive the convection currents in the mantle?
Temperature differences in the mantle drive convection currents because warm material is less dense and rises, while cooler material is more dense and sinks. This movement creates a circular flow as the cooler material sinks and gets heated, while the warmer material rises and cools down. The density variations caused by the temperature differences are a key driver of convection in the mantle.
What makes convection currents more dense?
Basically, Density is the result of an amount of mass packed into a given space. The more mass packed into a space, the denser the object and the less mass, the less dense it is. Convection is heat transfer by fluid or liquid movement. It is found in the air (as wind) in the oceans (as currents) and in the mantle of the Earth (it affects plate movement). Warm air or water or mantle rises and is replaced by the cooler mass. In the case of the air and water, the cooler, denser air and water falls due to having more mass and gravity pulling on it. In the mantle, the cooler mantle is falling and its density allows the core's gravity to pull on it. But the deeper into the mantle, temperature increases instead of decreasing due to pressure in the outer and inner core. Density and convection work together to help keep the balance of systems in all areas of Earth's processes.
Why does cool rock materials sink when convection takes place in the mantle?
Cool things always sink (because they are more dense) and hot things always rise (because they are less dense) in convection. It does not matter if it is rock, air, water, metal, wax, oil, etc., convection always works the same.
What is the plates that floating on the upper layer of the earth's mantle?
Plate tectonics... I wish you would be more specific.
What are the layers of the Earth in order starting at the outermost layer and going inward Core Mantle layer with more convection Moho barrier Mantle layer with less convection?
1st-moho barrier2nd-mantle layer with more convection3rd-mantle layer with less convection4th-core
What is the most expansive layer of the?
The largest layer is the mantle, or more specifically, the upper mantle.
What is the most expansive layer of the Earth?
The Earth's mantle comprises the bulk of the Earth.
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
When the mantle is heated the magma rises because?
When it is heated it becomes less dense (i.e. lighter). The more dense (i.e. heavier) magma sinks while the less dense magma rises to the top. It will eventually cool again causing a convection current within the mantle.
inner core?
the layer of the earth just below the mantle mode of more soild material
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.
If convection in the mantle increased how would the earths crust be affected?
there would be more earthquakes and more volcanic eruptions
Does mantle material rise in convection currents because heated materials become more dense?
no
Why does cool rock sink when convection takes place in the mantle?
Cool things always sink (because they are more dense) and hot things always rise (because they are less dense) in convection. It does not matter if it is rock, air, water, metal, wax, oil, etc., convection always works the same.
Why does cool material sink when convection takes place in the mantle?
Cool things always sink (because they are more dense) and hot things always rise (because they are less dense) in convection. It does not matter if it is rock, air, water, metal, wax, oil, etc., convection always works the same.
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.
