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Convection. The same as the shimmering above a hot road in summer, heated material is less dense and rises over cooler material.
convection currents

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Related Questions

What is the layer of the rock beneath the earths crust?

mantle


What is the layer of earth beneath the crust called?

The layer of the Earth below the crust is called the mantle. The mantle is the thickest layer of the Earth with a depth of 2,890 kilometers.


By which process is the earths crust returned to the mantle?

The process by which the Earth's crust is returned to the mantle is known as subduction. In subduction zones, oceanic plates are forced beneath continental plates, carrying crustal material back into the mantle where it is recycled. This process is a key part of the Earth's tectonic cycle.


What is beneath the earths crust that circulates like a conveyor belt?

The mantle is beneath the earth's crust, and it circulates in a process known as mantle convection. This convection is driven by the heat from the Earth's core, causing molten rock to move in a circular motion, much like a conveyor belt.


Why do seismic waves speed up beneath the surface of continents?

Because earths crust is denser than the mantle


What is the lower mantle beneath?

The lower mantle is beneath the crust.


What is the color of the earths mantle?

The Earth's mantle is primarily composed of silicate minerals, which give it a greenish-gray color. However, the mantle is located beneath the Earth's crust, so its color is not visible on the surface.


How far down is the earths upper mantle?

The upper mantle of Earth begins just beneath the crust, which ranges in thickness from about 5-70 km (3-44 miles) depending on the location. The upper mantle extends to a depth of about 670 km (416 miles) beneath the Earth's surface, marking the boundary with the lower mantle.


What does the earths mantle smell like?

The Earth's mantle is located beneath the crust and is made up of solid rock. Since it is not accessible for direct smelling, we do not have information on what it smells like.


What is the process of recycling materials that make up the earths crust and mantle?

The Rock Cycle ^_^


What is The scientific name for the earths upper mantle?

The scientific name for the Earth's upper mantle is "asthenosphere." It is a layer of the Earth located beneath the lithosphere and is characterized by its partially molten state, which allows for the movement of tectonic plates.


What are facts about earths upper mantle?

Temperature is about 2000 to 3000 degrees celsius maybe less.The mantle is hot but not the hottest layer.It is is the second layer of the Earth. The mantle is the thickest layer of the earth, it is the layer of the earth beneath the crust.Upper mantle and Lower mantle are the two parts of the mantle, The lower mantle is deeper and denser than the upper mantle .