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Magmas are mainly liquid and contain dissolved fluids such as water, most are less dense than the adjacent solid rock and so move upward.
Explanation:
Magma -
It is a semi solid particle and the igneous rocks are formed from magma .
Magma is basically found inside the surface of the Earth and may come out from Volcanoes , due to any tectonic movements .
The composition of magma is basically molten form of rock along with gas bubbles and some crystals .
The magma is very dense in nature and slightly viscous and hence can flow , being semi - solid in nature .
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I would live in a volcanically active zone because if I'm a farmer I get a lot of nutrience from the ash
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The Cartesian Coordinate System is used to locate a point in space by giving its relative distance from perpendicular intersecting lines (Encyclopedia.com). René Descartes was the inventor of the Cartesian coordinate system with the help of Pierre de Fermat. Descartes used the letters from the beginning of alphabet (constants were identified by a, b, c and so forth) and the letters at the end of the alphabet (x, y, z) were used for variables. These were expressed on the line as equations. The system itself; first coordinate value (x-coordinate) describes the horizontal axis (x-axis) and the 2nd coordinate value (y-coordinate) locates the point of the vertical axis (y-axis). The coordinating system helps duplicate geometric figures (i.e. triangle has coordinates of A (3,2), B (4,5), and C (-2,4) and with these coordinates, you are able to duplicate another.
Explanation:
hope that helps
https://www.encyclopedia.com/education/news-wires-white-papers-and-books/descartes-and-his-coordinate-system
Oceanic crust is dominated by mafic and ultramafic intrusive igneous rocks whereas continental rocks are dominated by granitic (felsic) intrusive igneous rocks.
The difference in density has an impact on isostacy of crust floating on the semi-fluid upper mantle (asthenosphere), with continental crust (about 2.7g/cm3) rising or floating above oceanic crust (about 3.5 g/cm3).
The continental crust is by far the older of the two types of crust.
The mantle, oceanic crust, and continental crust all have different compositions due to a process called partial melting.
Because continental crust is less dense than oceanic crust it floats higher on the mantle, just like a piece of Styrofoam floats higher on water than a piece of wood does.
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