It has a radius of about km. The inner part of the earth is the core. This part of the earth is about 1, miles 2, km below the earth's surface. The core is a dense ball of the elements iron and nickel. The layer above the core is the mantle.
It begins about 6 miles 10 km below the oceanic crust and about 19 miles 30 km below the continental crust. The crust lays above the mantle and is the earth's hard outer shell, the surface on which we are living. In relation with the other layers the crust is much thinner. It floats upon the softer, denser mantle. The crust is made up of solid material but these material is not everywhere the same.
Expert Answers cburr Certified Educator. There are four main layers in the earth. Related Questions In which layer of earth do people live? It begins about 6 miles 10 km below the oceanic crust and about 19 miles 30 km below the continental crust The crust lays above the mantle and is the earth's hard outer shell, the surface on which we are living. Begin typing the name of a book or author: Some of the impacts are obvious, such as volcanic eruptions or life threatening earthquakes.
Others are not so obvious, such as the way in which the planet's magnetic field protects the Earth from the harmful energy in outer space. Obvious or not, human life is directly affected by the processes that take place inside the Earth. The study of Earth's layers ultimately helps humans to better understand the planet's processes, including those taking place in its inner layers. Depending where the lines are drawn, the Earth has five layers: However, no one has ever actually seen the inner layers of the planet.
Everything we know about Earth's interior has been deduced by scientists gathering information at the Earth's surface. Over 11,, live tutoring sessions served! To get the best deal on Tutoring, call Toll Free.
Layers of The Earth. Mass Back to Top. The mass of the Earth may be determined using Newton's law of gravitation. The planet Earth is only a tiny part of the universe, but it is the home of human beings and all known life in it. It ranks fifth in size and its mass is found to be about 5. Mass is a characteristic that is inherent and it is independent of the object's environment and the method used to measure it.
It is a scalar quantity, that is, a single value with and appropriate unit that has no direction. Core Back to Top. If the Earth is like a giant, hard boiled egg, then the core of the Earth is like the yolk. As the planet cooled, the heavy iron contained in the mix of melted rock started to separate out to collect as a core at the center of the planet. According to some earth scientists, core formation happened very early in the history of the Earth, perhaps within the first hundred million years after the planet formed.
During this period, a solid, inner core and a semi liquid outer core took shape. Most scientists believe this inner core is still heated by warmth left over from the collision and accretion of the many asteroids and meteors that originally formed the planet.
Scientists now estimate that the Earth's solid-iron, inner core is about miles across, about the same size as the moon.
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The crust sits atop the mantle, although the liquid magma of the mantle sometimes breaks through. When this magma cools, it hardens into part of the outer crust. In some places, like the bottom of the ocean, the crust is quite thin.
This part of the earth is about 1, miles (2, km) below the earth's surface. The core is a dense ball of the elements iron and nickel. The layer above the core is the mantle. Chemically, the earth’s surface can be divided into crust, upper mantle, lower mantle, outer core and inner core. Inner core The solid inner core has the radius of nearly km, suspended in .
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