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Continents float on the Earth's mantle because continental rocks are 'blank' than mantle rock.?
Continental rock is less dense than mantle rock.
What layer of earth forms the continents?
the crust. the layer below that is the layer of molten lava called the mantle. the continental plates move and float on this. this is known as continental drift
Why are the continents placed above the oceans?
Because continental crust is less dense and thicker than oceanic crust, it "floats" higher on the underlying mantle rock. Notice how high the continental crust rises above the oceanic crust in this cross section of the North American Plate. Oceanic crust is made of dense basalt; continental crust consists of less dense granite
Who is the scientist who first proposed that thermal convection in the mantle causes continental drift?
Alfred Wegener, a German meteorologist and geophysicist, proposed the theory of continental drift in 1912. He suggested that thermal convection currents in the mantle cause the movement of continents over time.
What part of the earth system contains continents?
The lithosphere, which is the outermost layer of Earth's surface, contains continents. The lithosphere is made up of the crust and upper mantle and is divided into tectonic plates that include both oceanic crust and continental crust. Continents are large landmasses that sit on top of the continental crust.
Where would you be most likely to find granite in earths mantle or earths continents?
you will find it in earths mantle because it is a kind of an igneous rock
Continents float on the Earth's mantle because continental rocks are 'blank' than mantle rock.?
Continental rock is less dense than mantle rock.
Do continents drift slowly on earths upper mantle or earths core?
Continents drift on top of the upper mantle. The core is much further down.
Why do seismic waves speed up beneath the surface of continents?
Because earths crust is denser than the mantle
Why do the earths continents float on the liquids mantle of the earth?
The continents "float" on the liquid mantle of the Earth because the metals that make up the mantle are very dense. The continents move when magma is pushed through the crust of the Earth in places like the Mid-Atlantic Ridge. The continents "float" on the liquid mantle of the Earth because the metals that make up the mantle are very dense. The continents move when magma is pushed through the crust of the Earth in places like the Mid-Atlantic Ridge.
Why are continents not fixed permanently in location on the earths crust?
The continents are embedded in the top side of crustal plates which float on the surface of the mantle. Convection currents in the mantle carry the plates around and the embedded continents travel along.
What layer is the thickest of earths crust?
The answer is Continental crust.The Mantle is the thickest layer of the Earth. :)
What is the part of the earth which the tectonic plates are able to move?
The mantle moves the continents, which is called continental drift.
What layer of earth forms the continents?
the crust. the layer below that is the layer of molten lava called the mantle. the continental plates move and float on this. this is known as continental drift
What layer are the continents sliding down?
The continents are located on Continental plates, which "float" and "slide" along the Asthenosphere, which is the "gooey" upper mantle and lower part of the crust.
Why are the continents placed above the oceans?
Because continental crust is less dense and thicker than oceanic crust, it "floats" higher on the underlying mantle rock. Notice how high the continental crust rises above the oceanic crust in this cross section of the North American Plate. Oceanic crust is made of dense basalt; continental crust consists of less dense granite
Where was the continental drift?
Continental drift occurs under the earths crust by convection currents in the mantle which drives the plates. It has been happening since the development of the earths core and is happening now and until the end of the earth.
